Summer Wars (Sama Ouzu) (PG)

Math whiz Kenji spends most of his life immersed online, but one day he’s whisked away to the countryside by his pretty classmate Natsuki and is soon introduced to her sprawling extended family. When Kenji unwittingly helps someone (or something) hack into Oz and wreak real-world havoc, it falls on him and his eccentric adopted family to save humanity from the sinister online threat.