Ten-year-old Fiona is sent to live with her grandparents in a small fishing village in Donegal, Ireland. She soon learns the local legend that an ancestor of hers married a Selkie – a seal who can turn into a human. Years earlier, her baby brother was washed out to sea and never seen again, so when Fiona spies a naked little boy on the abandoned Isle of Roan Inish, she is compelled to investigate.

Many years after the events of the original film, legendary sorcerer Willow leads a group of misfit heroes on a dangerous rescue mission through a world beyond their wildest imaginations.

The evil Queen Bavmorda hunts the newborn princess Elora Danan, a child prophesied to bring about her downfall. When the royal infant is found by Willow, a timid farmer and aspiring sorcerer, he's entrusted with delivering her from evil.