A sixteen-year-old boy relates his discovery of the Pearl of Heaven and his near-fatal encounter with the feared sea monster, Manta Diablo.

In the Pacific there is an island that look like a big fish sunning itself in the sea. Around it, blue dolphins swim. Once, Indians also lived on the island. When they left and sailed to the east, one young girl was left behind. It is not only an unusual adventure of survival, but also a tale of natural beauty and personal discovery.