Mako Mermaids: An H2O Adventure

Young mermaids of the Mako Island pod, Sirena, Lyla and Nixie have the task of keeping trespassers off the magical island. On a full moon, they fail to stop a land boy, Zac, from falling Moon Pool, and the power of the moon transforms him into a merman!

To rejoin the pod, Sirena, Lyla and Nixie must turn Zac from part-time merman to full-time land boy. With the power of Sirena's Moon Ring, the mermaids give themselves legs and walk on land to begin their task.

Attempting to capture Zac in his natural environment, Sirena, Lyla and Nixie follow him to school. When their plan fails, the school principal, Rita Santos, confronts them and confiscates Sirena's Moon Ring.

While Nixie and Sirena discover shopping, Lyla looks for Zac at The Ocean Café. When a waitress accidentally spills a drink on Lyla, she rushes to the cool room - just before secretly transforming into a mermaid!

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.

Zac is still enjoying being a merman and the mermaids are no closer to removing his powers. Lyla believes they need a new strategy - maybe they should become his friend so they can convince him to lose his powers.

Ever since he became a merman, Zac struggles with a lot of normal things and it's starting to get to him. His girlfriend, Evie, notices Zac's mood and with Cam's help arranges a pool party to cheer him up.

There's going to be a full moon and Lyla, Nixie and Sirena must quickly do something about Zac. If they keep him out of the moonlight, maybe he'll lose his powers - Zac will return to his land-dwelling self and they can return to their pod.

Lyla gets an idea while listening to Sirena's beautiful song. If Sirena sings themermaid's ancient Enchantment Song to Zac, he'll fall under her spell and they'll have the chance to take his powers.

Zac tells the mermaids he's going back to Mako to find out more about what happened to him. Lyla thinks they should go to keep an eye on him, and maybe they'll find out how to remove his powers.

Fearing they'll never get the pod to return to Mako, a despondent Nixie finds herself at odds with Lyla and Sirena. Seeking solitude, she meets Ben, a young boy whose family is leaving their home to live on a yacht.

Sirena Irena is collecting shells on the reef when she sees merman Zac. Luckily, she torpedoes away before he recognises her. But it's not enough - Zac saw her tail and now believes there's another merman in the Mako waters.

The full moon is once again upon Mako and the mermaids have to stop Zac from getting the all-powerful Trident. But the full moon draws Zac to Mako where he fights off the mermaids and seizes the Trident.

Now that he knows Sirena, Lyla and Nixie are mermaids, Zac begins to wonder about his school principal, Rita, and why she helps the mermaids. Zac quickly uncovers the truth - Rita is also a mermaid.

When David invites Sirena to sing with him at the Ocean Café, their connection grows. Seeing Sirena's attachment to a land boy, Lyla and Nixie fear that Sirena might not want to return to the sea.

While showing off his brand new smart phone, Cam takes video footage of Zac swimming as a merman. During an argument with Nixie in the café, Cam accidentally loses his phone.

Zac finds a Moon Ring on the ocean floor and when he gives the ring to Evie, the mermaids know it's no ordinary ring. They have to get it back! But Evie isn't about to hand it over, and Zac knows the ring holds great power.

A full moon. A Halloween party at the café. The perfect chance for Zac to seize the Trident. The mermaids keep a close watch on Zac at the party, but with Cam's help, he evades them.

The Trident is every bit as powerful as Zac imagined. Only, he can't get it to work! Zac wonders if the Trident needs to be activated by moonlight and breaks into Rita's secret Grotto.

The Trident is active and dangerous, and the mermaids must take it from Zac. Knowing this, Zac searches for the perfect hiding place and decides on an old warehouse.

Sirena's sister Aquata returns to Mako with wonderful news - Sirena can return to the pod! Unfortunately, the invitation isn't extended to Lyla and Nixie. When Zac finds the Moon Pool he tries to kick Lyla and Nixie out.

When Rita's cat, Poseidon steps through a puddle of mermaid powders, he is transformed into a person. A girl - identical to Evie! A boy cat, in a real girl's body, Cst-Evie's behaviour raises many eyebrows.

Zacs continued search for the Trident has Lyla worried. Although she hid it well, Zac manages to find the Trident. But Lyla is right behind him, and as the two battle for possession, a flash of energy knocks Lyla unconscious.

For the first time, there are no secrets or differences between Zac and the mermaids. While Lyla tries to teach him more about the ocean and mermaid/merman history, Nixie refuses to trust him.

Behind Sirena and Lyla's backs, Nixie helps Cam get into the Moon Pool to unlock the Trident. But Evie insists on coming along for the dive. When the Moon Pool entrance suddenly closes, Evie is trapped underwater with her oxygen running out!