Summer Wars (2009): cast, story & where to watch
2009 · Film · ★ 7.5
Released in 2009, Summer Wars is an animation and science fiction film directed by Mamoru Hosoda, running about 114 minutes. “Always protect your network.” — that tagline sets the tone.
What it’s about. A student tries to fix a problem he accidentally caused in OZ, a digital world, while pretending to be the fiancé of his friend at her grandmother's 90th birthday.
Who’s in it. Summer Wars stars Ryunosuke Kamiki as Kenji Koiso (voice), Nanami Sakuraba as Natsuki Shinohara (voice), Mitsuki Tanimura as Kazuma Ikezawa (voice) and Sumiko Fuji as Sakae Jinnouchi (voice), among others.
How it landed. With an audience score of 7.5/10, Summer Wars has been warmly received by audiences. It went on to earn $18.4M at the box office.
Where to watch. In US you can stream it on HBO Max Amazon Channel, YouTube TV and HBO Max and rent or buy it from Amazon Video, Apple TV Store, Google Play Movies and YouTube. See the full, country-by-country breakdown on our where to watch Summer Wars page.
If you liked it. Fans of Summer Wars tend to enjoy Spirited Away, Your Name., Grave of the Fireflies and Spider-Man: Into the Spider-Verse.
Frequently asked
- Where can I watch Summer Wars (2009)?
- In US, Summer Wars is available to stream on HBO Max Amazon Channel, YouTube TV and HBO Max, and rent or buy from Amazon Video, Apple TV Store and Google Play Movies. Availability varies by country — check our where-to-watch page for every region.
- Is Summer Wars worth watching?
- Summer Wars holds an audience score of 7.5 out of 10, and is a strong pick if you enjoy animation and science fiction. Most viewers rate it highly.
- Who stars in Summer Wars?
- Summer Wars stars Ryunosuke Kamiki, Nanami Sakuraba, Mitsuki Tanimura, Sumiko Fuji and Takahiro Yokokawa.
- When was Summer Wars released?
- Summer Wars was released in 2009, with a runtime of about 114 minutes.