Blizzard

S1 E5: The threat of rain keeps Lyla, Nixie and Sirena indoors and unable to look for Zac. Nixie decides it's too risky to try to get to Zac and heads out to Mako Island alone. Refusing to simply wait for the rain to clear, Lyla suggests that Sirena uses her Moon Ring to stop the rain. Inexperienced with the Moon Ring's magic, Lyla and Sirena create a blizzard in Rita's secret Grotto and ice over the sea entrance. While trapped in Rita's house, the two young mermaids fall ill with Snow Rash. Meanwhile, Zac is meant to go on a camping trip with his dad. But the rain makes it dangerous for him to go outdoors too. Zac has to find a way to get out of the trip without hurting his Dad's (Dr. Blakely) feelings. Cam is called for help, and he talks Zac into feigning illness. The café owner David arrives at Rita's to deliver some seafood. Worried about the mermaids he calls Dr. Blakely, forcing Lyla and Sirena to try to explain their curious mermaid symptoms... or be taken to hospital. Luckily for Zac his father is busy with the mermaids, and believes his son may have the same disease. With Dr. Blakely ready to take Lyla and Sirena to hospital for tests, Nixie seeks Rita's help and magically uses dried seahorse powder to cure the mermaids' Snow Rash and keep their secret safe.