Picasso, a young triggerfish, is anxious to mature into the beautiful colors of an adult male. His body still shows the dull shades of a young triggerfish, and he is teased by the other males of his clan who are already growing out of adolescence.
Breaking the rules of the clan, Picasso secretly leaves on his own to hunt on the reef. He hopes, by bringing back food, he will be accepted as an adult, and maybe his colors will begin to change.
However, Picasso’s actions get him banished from his clan, never to return. Forced to live on the reef alone, Picasso sees the world outside his clan with new eyes. He realizes the reef is full of discovery, especially when he meets a scuba diver named Tahani.
But shadows begin to lurk in the water. A deadly shark named White Mano returns to the reef, and Picasso needs the help of Tahani to stop it before his clan is discovered.