The sisters come to the aid of Mylie,a Mermaid-turned-human on the run from the Sea Hag who in turn needs the mermaid for the evil Necron. In trying to help her,Phoebe is turned into a mermaid.. Paige turns to Cole for help in finding Phoebe..
U're not gonna die, cuz I'm not gonna let U: In this scene Leo(brian krause) feels he's gonna die & tells Piper to go some place sûr, sans danger cuz 'The Source' might attack her anytime
A doctor (guest étoile, star Matthew Glave) who treated Piper when she was dangerously ill has been trying to uncover the reason for her miraculous and magical recovery.
When a demon starts killing Sandmen, The Charmed Ones are left fighting their own nightmares. The only way out is to put themselves to sleep in order to confront their own "demons".