Mike Daniels plans an elaborate revenge on police detective Babe Mandel, who led a raid that resulted in Mike's imprisonment and the death of Mike's brother, ironically innocent of wrongdoing. First Daniels and his lover Liana kill a man, and then Daniels forces Sonny Mandel, Babe's daughter, to handle the weapon. He believes she'll go to prison. She manages to escape, and seeks sanctuary in a cult-like group where no one can find her. But a surprise witness leads McGarrett to question her guilt regardless - and some help from Babe puts McGarrett on the right track towards the identity of the mastermind.