What's the story?
While spending the summer at a rented beach house, widower Terry Barnett (Steve Guttenberg) and his young son, Jordan, befriend their marine biologist neighbor, Mary Beth Dunhill (Kathleen Quinlan). Terry's dog, Zeus, strikes up an immediate kinship with Roxanne, a formerly captive dolphin that Mary Beth is trying to get to adjust to life in the open sea. While Jordan and Mary Beth's daughters plot to get their parents together, Mary Beth applies for a grant on interspecies communication, utilizing Zeus for her research. But her unscrupulous competitor, Dr. Carver, does everything he can to sabotage her work and win the grant for himself. Carver captures Zeus and Roxanne, but Zeus turns the tables and traps Carver in a net while he and Roxanne escape.