Following a ship wreck, a baby is rescued by a clan of Ninja warriors and raised by them as one of their own. But Haru (Chris Farley), as he is called, never quite fits in, nor does he manage to make a worthy Ninja. However, the good-natured and persevering Haru, in his own bumbling way, and with some help from Gobei (Robin Shou), manages to prove himself to be a winner in the end.