Surprise!

S2 E19: A surprise birthday party is in the works for Evie, but Zac is so tight-lipped about it that she thinks he's forgotten. Mimmi tries to cheer Evie up by letting her try on her moon ring. Evie accidentally shrinks herself and falls into an aquarium, which Zac is giving her as a present. The mermaids bring the aquarium to the party without realising that Evie is inside. Evie struggles to get Zac or the mermaids to notice her, while hiding from everyone else.