The story of the happy, brave and peace-loving moles defeating evils and protecting their home continues. This time they have to protect the secret treasure of the mysterious sirens. They venture onto the ocean to stop the evil magician Kula from destroying all children's dreams.

This film is the first installment in the Legend of the Moles franchise, based on the hit online game, Mole's World. This kiddie-targeting film tells children that we need to cherish our friends, protect all species and live together with them in harmony.

Mole oversleeps and misses his chance to go to summer camp. Upset, he runs away from home, boarding a magical train which promises endless fun and no rule. Will he ever get home again?