This is a movie about a marine biologist, Mary Beth, who is a single parent and leads a hectic life with her two impossible daughters, Judith and Nora. She, along with her partner Becky, are trying to study and save a beautiful dolphin named Roxanne. Unfortunately, Mary Beth's greedy partner, Claude Carver, tries to capture the dolphin and sell her. Zeus, Terry, and Jordan's dog stow away one day on one of Mary Beth's boat trips, which really annoys Mary Beth. However, when she finds out that the dog and the dolphin can do "interspecies communication," she is intrigued and curious. She meets Terry, the single father of Jordan, and they go out. In the end, it's a race to save the dolphin and Zeus, who was kidnapped by Claude.