Summer Wars (Japanese: サマーウォーズ, Hepburn: Samā Wōzu) is a 2009 Japanese animated science fiction film directed by Mamoru Hosoda, produced by Madhouse, and distributed by Warner Bros. Pictures. The film's voice cast includes Ryunosuke Kamiki, Nanami Sakuraba, Mitsuki Tanimura, Sumiko Fuji and Ayumu Saitō. The film tells the story of Kenji Koiso, a timid eleventh-grade math genius who is taken to Ueda by twelfth-grade student, Natsuki Shinohara to celebrate her great-grandmother's 90th birthday. However, he is falsely implicated in the hacking of a virtual world by a self-aware, sadistic artificial intelligence named Love Machine. Kenji must repair the damage done, and find a way to stop the rogue computer program from causing any further chaos.
Kenji receives an e-mail with a mathematical code and cracks it. However his actions inadvertently cause OZ's Love Machine to use Kenji's avatar and hack the infrastructure with the encryption Kenji had inadvertently cracked, causing widespread damage. Kenji, Sakuma, and Natsuki's cousin Kazuma Ikezawa confront Love Machine. Love Machine defeats Kazuma's avatar King Kazma and continues to absorb accounts in the OZ mainframe, which due to many accounts being connected to devices for public infrastructure allows Love Machine to cause catastrophic traffic congestion and the disabling of electrical devices. Two of Sakae's relatives, Rika and Shota Jinnouchi, discover Kenji's involvement. Shota arrests Kenji, but the congestion causes Natsuki to return them to the estate. 2b1af7f3a8