In 2015, fifteen years after a global cataclysm known as the Second Impact, Ikari Shinji is summoned to the city of Tokyo-3 by his estranged father Gendou, the Supreme Commander of NERV. When he is caught in the crossfire between UN forces and the Fourth Angel, Lt. Colonel Katsuragi Misato rescues Shinji and brings him to NERV Headquarters. Gendou then forces Shinji into piloting Evangelion Unit-01, a large mecha, against the Angel. Shinji initially declines, but then concedes when Gendou threatens to send Ayanami Rei, a heavily bandaged Evangelion pilot, into battle.
Shinji pilots Unit-01 and wins the fight after it goes berserk and destroys the Angel. Afterwards, Shinji is taken in by Misato as her new housemate and enrolled in the local middle school. Shinji tries to settle in with his new-found life alongside Misato, Rei, and the others while he receives training to defend Tokyo-3 and the world from the coming Angels...
[Source: Wikipedia via AniDB]