Summer Wars (サマーウォーズ Samā Wōzu (2009))." is the story of a group of high school to college aged kids who need to protect the digital world of OZ.


For the list of characters, visit Characters.


Kenji Koiso is your typical teenage misfit: good at math, but bad with girls. He spends most of his time hanging out in an all-powerful online community known as Oz as a moderator with his best friend Takashi Sakuma. His virtual life is the only life he has until the girl of his dreams, Natsuki Shinohara, steals him away for the starring role as her fake fiancé at her family reunion. Things only get stranger from there. A late night email containing a cryptic mathematic riddle is sent to Kenji, and having nothing better to do, Kenji decrypts it. He sends a reply with the answer and the next day hears that he has decrypted Oz's renowned encryption key. By doing so, it unleashes an A.I.(Artificial Intelligence) intent on using the online world of Oz to destroy the real world. As the Armageddon looms on the horizon, Kenji and his new family set aside their differences and band together to save the world they inhabit and hold so dear by defeating the AI nicknamed Love Machine.