Incredible Crisis

Grandmother Hatsu has a birthday. She wants it to be a special day, and is eagerly waiting for her presents. However, father Taneo, mother Etsuko, son Tsuyoshi and daughter Ririka have all forgotten about that. They have to buy last-minute presents for the grandmother, and make it home in time for the party. Sounds simple? Not quite: each member of this completely ordinary, working-class family is delayed by inexplicable obstacles, which involve, among others, bank robbers, UFOs, miniaturization...