Zac and Cam get into fight at school over Zac's decision to return the trident. Rita invites Zac to join the girls' training sessions hoping to ease the turmoil Zac is feeling about living in two different worlds - one on land, and one at sea. With the trident safe, Sirena suggests their next step is to get Zac into the Moon Pool during a full moon to take away his powers. Nixie refuses to trust Zac, more so when he's reluctant to surrender his powers, but Sirena and Lyla don't share her strong feelings and are willing to give him a chance. Lyla spends time with Zac teaching him about mermaid/merman history and even takes him back to the Moon Pool. Cam orchestrates a crisis for Nixie at the café and plays the hero to keep her secret from being revealed. Afterwards, he offers to work with her to get Zac back to normal. Lyla shocks the others when she reveals she wants to plead Zac's case to the Mermaid Council in hopes of getting him accepted into the pod. Nixie's vehement opposition causes a rift between herself and the others forcing her to turn to the only other person she can - Cam.