Rachel Merrell goes into shock when her ex-boyfriend, Jeffery Williams, begins dating her half sister Marlene Draper. At first, Rachel swears Jeff is feigning interest in Marlene just to get back at her for breaking up with him. Rachel pretends Jeff's interest in Marlene doesn't bother her, but when they unexpectedly hit it off and love begins to blossom, Rachel can't bear to watch the happy couple. Suddenly, Rachel wants Jeff back and she is determined to get him no matter what the cost, including Marlene's happiness.