Luca and his best friend Alberto experience an unforgettable summer on the Italian Riviera. But all the fun is threatened by a deeply-held secret: they are sea monsters from another world just below the water’s surface.

Elastigirl springs into action to save the day, while Mr. Incredible faces his greatest challenge yet – taking care of the problems of his three children.

A young boy comes of age in the most peculiar of circumstances. Tonight is the very first time his Papa and Grandpa are taking him to work. In an old wooden boat they row far out to sea, and with no land in sight, they stop and wait. A big surprise awaits the boy as he discovers his family's most unusual line of work. Should he follow the example of his Papa, or his Grandpa? Will he be able to find his own way in the midst of their conflicting opinions and timeworn traditions?