Jason time travels to Sparta, becomes a pariah at the very bottom of society, and is forced to choose from three disliked girls. Unexpectedly, he simultaneously binds a favorability system: the higher the girls' affection for him, the stronger the modern weapons he can unlock. When three hundred Spartan elite soldiers charge at his door, Jason directly takes the three girls and fights back with AKs, Gatling guns, and RPGs.