Ryûhei Sasaki (Teruyuki Kagawa) is keeping a secret from his wife, Megumi (Kyôko Koizumi), and his two teenage sons. Even though he leaves the house every day, he’s not really going to work. He’s going to an employment office. He recently lost his job due to outsourcing, but is determined to find another position, all while supporting an old friend who is also out of work. But when Megumi accidentally finds out Ryûhei’s secret and doesn’t tell him, her trust in him, and their marriage, suffers.

For his fourth full feature, Toyoshi Toyoda has abandoned the theme of the angry young man, examined in depth in Pornostar, Blue Spring and 9 Souls. Kuchu Teien is, on the face of it, more a drama, a character study, than a typical Toyoda genre flick. Yet within this beautifully structured and photographed film, there lies a dark soul. Ostensibly the story of a happy family, it becomes increasingly clear as the movie progresses that the Kyobashis are anything but. Despite a family agreement that they are all open with each other, the entire household knows the opposite is true.

Narumi is on bad terms with her husband Shinji when one day, Shinji goes missing. He comes back a couple of days later, but seems like a totally different person, and is now gentle and tender. He goes for a walk every day. Meanwhile, Journalist Sakurai covers the story of a family that was brutally murdered, when an unexplained phenomenon takes place. Shinji Kase tells his wife that he came to Earth to invade.