Summer Wars is a 2009 Japanese animated film about a timid high school math whiz named Kenji who is invited to spend summer vacation with the family of his crush, Natsuki. While there, he is tricked into solving a complex code for a global virtual world called OZ. This code turns out to be a rogue artificial intelligence that begins hacking and wreaking havoc on real-world infrastructure, threatening to cause a global catastrophe. Kenji must use his math skills and the help of Natsuki's large, eccentric family to stop the AI and save both the digital and physical worlds. Readers enjoy the film for its unique blend of warm family drama, high-stakes cyber adventure, and visually stunning action, as well as its heartwarming message about the strength of human connection and community in a digital age.