The movie is a story of twin sisters coveting the same man. Bobby is a working girl in Bangkok while her twin sister, Julie, is interested in only having a good time. Bobby meets Rocky at the seaside where he is the lifeguard. She can’t swim and doesn’t want to get into the waters but Rocky assures her that he would save her in case she was drowning. She moves into the water and begins to drown. Rocky rescues her but not fast enough. She is so close to death that in order to resuscitate her, Rocky is left with no choice but to make love to her. When she finally comes to her senses, she is aghast that she has lost her virginity and insists on marriage with Rocky.

After they are married, Bobby goes to work while Rocky stays at home, where he is seduced by Bobby’s twin, Julie. The unhappy triangle continues till Rocky’s brother, Johny, comes to stay with them. He falls in love with Julie, who leads him on. Julie explains to Rocky that she’s only pretending to be in love with Johny. Her plan is to marry Johny, but under that cover, to continue her love affair with Rocky. Johny overhears her and stabs her to death. He then heads towards the police station to surrender.