Charlotte's short-lived friendship with the girls is over. She demands loyalty from Lewis by saying he cannot talk or have anything to do with Rikki, Emma, or "especially Cleo". Lewis only reluctantly agrees, hoping it's just temporary. Meanwhile, Cleo is having difficulty evading washing the dishes, much to her father's displeasure. Upset at her father's pressuring and Lewis's avoidance of her, Cleo escapes and meets Charlotte. Using her unfair advantage - her additional powers and strength - Charlotte beats Cleo in a brief showdown, steals her locket, and tells Cleo that Lewis no longer wants anything to do with her. Rikki and Emma tell Cleo to stay away from Charlotte and Lewis, and no longer listen to her, refusing to help. Feeling crushed and helpless, she tries to call Lewis, but Charlotte has stolen his phone. Isolated and overpowered, Cleo tries to escape her human life, she runs away from home, only to find herself in a shark breeding ground. Lewis finds out that Charlotte stole his phone and is trying to isolate him. Angrily, Lewis breaks up with her, saves Cleo, and gets back together with her. Unfortunately, by choosing Cleo over Charlotte, Lewis has created an enemy more powerful than they could imagine.