Watch Bikini Summer III: South Beach Heat for Free: How to Stream the Movie Online at 123Movies. . Jamie is a makeup artist for a local bikini contest on the beautiful South Beach of Miami. Her life appears to be falling apart when her boyfriend leaves her in a jealous rage. Her wild and gorgeous friends, Dev and Bink, convince her to be a contestant in the contest while her ex-boyfriend's bumbling private detective hilariously tries to track her. In a transformation of innocence to high-profile model, Jamie heats up Miami at South Beach.