Tatsumi, a lonely man working in the underworld, encounters the murder scene of his ex-girlfriend Kyoko. Her sister Aoi swears revenge, and Tatsumi, despite feelings of hostility, agrees to help her pursue the perpetrator of Kyoko's murder.

When Mother (Ellen Burstyn) suddenly refuses to get up from a display couch in a furniture store, her three estranged children (Ewan McGregor, Rhys Ifan, and Lara Flynn Boyle) must figure out the predicament.