The chamber's true purpose is revealed: to drain the magic from all mermaids. Zac risks his life to shut it down and restore the mermaids' magic.
Rikki takes matters into her own hands by spying on her dad and his new girlfriend.
Link to What to Watch: In Theaters and On Streaming CinemaCon 2026: Exclusive Interviews for Supergirl, Avengers: Doomsday, and More! Link to CinemaCon 2026: Exclusive Interviews for Supergirl, ...
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