Anyway, they pull the data off the spear and it goes to the Battle of Thermopylae where you play as Leonidas reenacting 300 with the spear, which gets snapped when Leonidas gets killed and then ends up in the hands of his son, Daughter, who gives birth to two kids, the younger of whom is then demanded to be murdered by creepy masked dudes who are....wait for it, PROTO-TEMPLARS! And it goes wrong and the both kids fall off a cliff near Sparta and the older ends up in a boat and ends up on an island on the ass end of Greece called Kefalonia, where Kass grows up being cared for by a local dipshit named Markos(and she still has the spear, which she uses instead of the hidden blade). Anyway, years pass with Kass being Markos/Cousin Roman's personal enforcer and there to bail him out when he predictably pissed off the wrong person and/or does something stupid(this is implied to happen quite often) until Kass runs afoul of some mysterious shady dude and that sets her on the trail to leave the island on an assignment to kill her dad. But it turns out the shady dude was also a member of the shady masked proto-templars called the Cult of Kosmos who all hang out under the Temple of Apollo at Delphi and do bad things all over greece because they're dicks(but they're basically Templars, so I repeat myself).
So after taking way too fucking long to explain how the plot opens because this plot kinda dumb in how it's set up and justified, the plot splits into 3, which is arguably something new and interesting for the series, in theory at least. The main thrust of the plot is the family plot. Kass runs around Greece looking for her scattered family and eventually meeting them all, including her brother Alexios who is known as Deimos(Terror) and works as the Cults Dragon(He doesn't run it, I'll get to that in a moment) in addition to being violent and deranged(as opposed to Kass, who's just heroically violent because she kills people for money and when she doesn't like them). Interestingly, because of the choice system, you can end this storyline and the main plot with your entire family alive and reunited, all dead with Kass as the only remaining member of her family or somewhere in between, which is determined by a few key choices that, like the Witcher 3, will show results hours down the line.
The 2nd plot is the Cult of Kosmos, where you hunt down the entire cult, but often by hunting down minor members to find the location and identity of major members to eventually work your way to the one in charge(AKA not Deimos). Now, some of these guys you'll end up killing per the storyline, but a good majority of them you need to do some work to find and kill and they're 42 of them scattered all across Greece. This makes up the majority of the Assassinations in this Assassins Creed game and while you can kill some of them as you work your way through the plot, you can't actually finish this plot until likely after you finish the main storyline due to the level gating, as in some of the bigtime cultists are near level 50, which is about the point most gameplay missions top out(even though the levels go up to 99 but that's mostly for bragging rights and so you can unlock the entire skill tree). So this is arguably the longest part of the game.
The 3rd and final plot you don't actually bump into until about midway through the game and while it's the shortest it's also heavily level gated so you probably can't finish it until after you beat the main game because of how high your level needs to be. So basically at one point you're directed to visit a very desolate island in the middle of the map, one that looks like it's been destroyed by a volcano. On the island you find a large door opened by solving a big mirror puzzle that's been there....I don't know, A couple years or a millennium or perhaps more.I have a bone to pick with this particular bit that I'll get into later. Once you get the door open, you end up in a huge ISU temple looking out into a sunken ocean city and meet a mysterious man, Pythogeus, who holds the staff Layla was looking for. And he's also Kass's real dad and also this is Atlantis, or what remains of it.
So you're given the task of finding the keys to Atlantis in the form of 4 ISU golden magic balls scattered around the map. But unlike the other ones, these are SPECIAL. It turns out that in addition to being keys, these ones also turn humans who touch them into huge suspiciously familiar monsters. Notably the Sphinx, the Minotaur, the Cyclops and Medusa. And anyone who manages to kill one and picks up the magic ball(now freed from it's human host) then turns into the same monster. This doesn't work on Kass because she's full of ISU genes and special. Basically, Kass might as well be an ancient aliens Demi-God in the setting, apparently being the most powerful of the Protagonists in the entire series because she's got the most ISU genes(remember kids, training and smarts and environment don't make you special, it's having all the right genes. And that's totally not cringy).
Anyway, basically Kass needs to find the 4 monsters and defeat them to get their special ISU balls to put in the big Atalntis gate to do something that I don't remember. Oh, to get the staff, which then makes her immortal while she holds it. And to feed into the Atlantis DLC. And they do make interesting boss fights and are thematically placed well. The minatur is in a huge ISU laybith under Knossos on Crete(though why the iSU would build a massive Labyrinth is unclear since you fight the minotaur in an arena beyond it), the cyclops is in a cave on an island, the Medusa is in a Petrified forest on Lesbos and the Sphinx waits near Thebes. Interestingly the Sphinx is a riddle contest and when you solve her riddles correctly, she dies(if you don't, she insta-kills you). There are also a few other cyclops on isolated parts of the map, but these are basically just boss battles with no real purpose. One is fought in a volcano and another in a bay full of shipwrecks).
So after taking way too fucking long to explain how the plot opens because this plot kinda dumb in how it's set up and justified, the plot splits into 3, which is arguably something new and interesting for the series, in theory at least. The main thrust of the plot is the family plot. Kass runs around Greece looking for her scattered family and eventually meeting them all, including her brother Alexios who is known as Deimos(Terror) and works as the Cults Dragon(He doesn't run it, I'll get to that in a moment) in addition to being violent and deranged(as opposed to Kass, who's just heroically violent because she kills people for money and when she doesn't like them). Interestingly, because of the choice system, you can end this storyline and the main plot with your entire family alive and reunited, all dead with Kass as the only remaining member of her family or somewhere in between, which is determined by a few key choices that, like the Witcher 3, will show results hours down the line.
The 2nd plot is the Cult of Kosmos, where you hunt down the entire cult, but often by hunting down minor members to find the location and identity of major members to eventually work your way to the one in charge(AKA not Deimos). Now, some of these guys you'll end up killing per the storyline, but a good majority of them you need to do some work to find and kill and they're 42 of them scattered all across Greece. This makes up the majority of the Assassinations in this Assassins Creed game and while you can kill some of them as you work your way through the plot, you can't actually finish this plot until likely after you finish the main storyline due to the level gating, as in some of the bigtime cultists are near level 50, which is about the point most gameplay missions top out(even though the levels go up to 99 but that's mostly for bragging rights and so you can unlock the entire skill tree). So this is arguably the longest part of the game.
The 3rd and final plot you don't actually bump into until about midway through the game and while it's the shortest it's also heavily level gated so you probably can't finish it until after you beat the main game because of how high your level needs to be. So basically at one point you're directed to visit a very desolate island in the middle of the map, one that looks like it's been destroyed by a volcano. On the island you find a large door opened by solving a big mirror puzzle that's been there....I don't know, A couple years or a millennium or perhaps more.I have a bone to pick with this particular bit that I'll get into later. Once you get the door open, you end up in a huge ISU temple looking out into a sunken ocean city and meet a mysterious man, Pythogeus, who holds the staff Layla was looking for. And he's also Kass's real dad and also this is Atlantis, or what remains of it.
So you're given the task of finding the keys to Atlantis in the form of 4 ISU golden magic balls scattered around the map. But unlike the other ones, these are SPECIAL. It turns out that in addition to being keys, these ones also turn humans who touch them into huge suspiciously familiar monsters. Notably the Sphinx, the Minotaur, the Cyclops and Medusa. And anyone who manages to kill one and picks up the magic ball(now freed from it's human host) then turns into the same monster. This doesn't work on Kass because she's full of ISU genes and special. Basically, Kass might as well be an ancient aliens Demi-God in the setting, apparently being the most powerful of the Protagonists in the entire series because she's got the most ISU genes(remember kids, training and smarts and environment don't make you special, it's having all the right genes. And that's totally not cringy).
Anyway, basically Kass needs to find the 4 monsters and defeat them to get their special ISU balls to put in the big Atalntis gate to do something that I don't remember. Oh, to get the staff, which then makes her immortal while she holds it. And to feed into the Atlantis DLC. And they do make interesting boss fights and are thematically placed well. The minatur is in a huge ISU laybith under Knossos on Crete(though why the iSU would build a massive Labyrinth is unclear since you fight the minotaur in an arena beyond it), the cyclops is in a cave on an island, the Medusa is in a Petrified forest on Lesbos and the Sphinx waits near Thebes. Interestingly the Sphinx is a riddle contest and when you solve her riddles correctly, she dies(if you don't, she insta-kills you). There are also a few other cyclops on isolated parts of the map, but these are basically just boss battles with no real purpose. One is fought in a volcano and another in a bay full of shipwrecks).