An aspiring actress, an aerobics instructor, and a would-be pop singer share a beach house in Malibu while cultivating business contacts and knockout tans. Kevin Costner, in his screen debut, co-stars as the handsome rancher romancing one of the ladies. Bouncy beach comedy-that was shot sometime in the 70s but not released until 1981-also stars Terry Congie, Lesley Brander, Roselyn Royce, Robert Acey. AKA: "Malibu Hot Summer." 90 min. Standard; Soundtrack: English.