A boat runs aground (zig's fault, of course) and a slick covers the sea's surface, leaving marina stranded on her rock. Zig decides to seize the opportunity to go for her.
Sharko finds an old trunk full of gold coins. He builds himself a palace fit for a king and buys the entire island in order to seduce the mermaid. So no one ever told him that money can't buy you love? Guess not!
A snow storm hits the island and pretty soon, everything is frozen over. An ice floe has even formed in the lagoon, isolating marina's rock. Since sharko is stuck in the ice, zig is home free in order to nab his mermaid! But someone has the same idea.
Zig becomes infatuated with a little shrimp who is amazingly strong so he sends him on a mission to capture the mermaid. Bernie has been demoted to doing all the dirty work and he is jealous as hell. So he sabotages all of the little shrimp's plans.
On the island, the volcano has started erupting. This gives Zig an idea. He is going to harness the volcano's powerful blast as a source of energy in order to build a machine that will hurl anything (including himself) onto the mermaid's rock.
The island is covered in a thick blanket of fog. A gigantic lighthouse has been built in the middle of the lagoon, preventing Zig from being able to see his mermaid. Zig decides to demolish it but the lighthouse keeper doesn't agree.
A freighter washes up on the island with a cargo of Lego type bricks. Zig is going to build a thousand and one objects to help him grab the mermaid. In the end, it's Bernie who builds the most impressive and efficient "trap".
Another mermaid suddenly shows up in the lagoon. Marina is none too happy about this intruder. Sharko gets all confused, he doesn't know which is which and Zig takes advantage of the confusion in order to grab at least one of the mermaids.
Marina is playing golf with Sharko. Zig discreetly slips onto the golf course. Zig's attempts to catch Marina are mostly just going to allow the mermaid to beat Sharko. Zig of course, turns out to be the big loser.
Zig and Bernie organize a go-kart race around the island. All of the island's inhabitants are at the starting line inside their customized vehicles. With his souped-up tortoise shell race car, Zig has every intention of catching Marina.
Zig finds a magician's trunk washed up on the beach and discovers that, with a twist of the magic wand, he can make anyone disappear. The missing people and animals reappear in the magician's hat. Zig decides to use it to discreetly kidnap Marina.
