Mary Beth is a marine biologist that gets annoyed when a dog called Zeus stows aboard her research boat. Nevertheless she is intrigued when the intrusive canine makes best-friends with her captive dolphin, Roxanne. She falls in love with Zeus’s owner, Terry, a musician who rides a bike.

An infamous terrorist has evaded capture for a long time by being extremely clever and ruthless. Things get interesting when he hijacks a plane carrying famous security expert John Cutter, who isn’t about to stand this sort of thing.