Where we left off on Episode 1, Amy discovers that Tess has sent a mermaid package to a marine lab. She invites Brenna and Kelsey over to find out how to stop her from exposing their secret.They discover that it is being sent to Key Largo.The boat leaves,but they make a very tiring swim to Key Large. Once on shore, they meet up with Blaire, who's on a fishing trip with her dad.They manage to sneak into the lab, and find the package. While running, Kelsey trips and twists her ankle. Exhausted, everyone soon falls asleep in the grass. After waking up, Amy tries to ask Blaire something, but the tide comes out ,and she needs to jump in the ocean. They get lost, but Brenna talks to fish for directions. After returning home, they agree that they will stick to the plan the next time they go on a crazy mission.