A small band of seabirds–Brown Bart, a brown pelican, Aikos, a sooty shearwater and One-Leg Ned, a wandering albatross–befriend a trio of young bottle-nosed dolphins–Tief, Potto and Nema. They fly and swim together through a wondrous yet dangerous ocean world, braving together fierce storms, a dangerous lee shore, a hammerhead shark, a tuna seiner and other perils of the sea. When Tief is captured by a marine park vessel and taken to Aquaworld, a marine theme park, the intrepid feathered and finned band searches for their young friend. When Brown Bart discovers the young dolphin, the seabird and dolphin fellowship plot together to free their beloved companion back to their ocean home.