A fireball from the sky causes Noah's home to break free from the Canadian coastline and float away. Now adrift in the Atlantic Ocean, the island runs out of steam in dangerous and freezing waters. Noah is ready to try anything to set the lava flowing again. Elsewhere a ship carrying a collection of animals bound for foreign zoos sinks in the middle of the ocean, leaving many of the surviving caged animals shipwrecked.

The island is beset with territorial disputes. Having won the animals interest, Noah is continuing with his efforts to get them to co-operate as one community. However, Reg, believing Noah to be crazy with his eccentric ways, protests against it with his own idea of each animal having their own individual country on the island. When the two animals both argue over their different ideas, Reg wins. Noah is left by himself. While some of the remaining animals try to sort out their problems, Noah recruits a small band of animals who are assigned certain jobs around the volcano. Meanwhile, all of the animals are finding it difficult to adjust to their new territories after suffering setbacks. They crawl back to Noah eventually realising that he was right about them working and living together as a family.

Noah has a shower with the help of Mammothsbody, who uses his trunk as a hose. Noah explains his intentions to the mammoth of rescuing more animals from Spain as they pass the Iberian Peninsula. But as Mammothsbody prepares to refill his trunk with water, a jellyfish lodges itself in his trunk and is accidentally sucked up! Noah has to rush the distressed mammoth to the infirmary where he finds Rocco lying across the operating table, Woomera impatiently attempting to remove him. Upon seeing the stricken patient, the kangaroo knocks Rocco off the table. Rocco fists the jellyfish from Mammothsbody's trunk. At that moment Salomi enters and Mammothsbody proposes to her, but once again he is rejected as the female mammoth spots the jellyfish. A heartbroken Mammothsbody goes to Problem Walrus to seek advice on the matter but the walrus puts him down, telling him he is 'slow, dim, witty and clueless'. Later the island becomes home to a Russian desman named Sacha.

The island runs aground, and A Lion appears.

Tusker's ability to propel large quantities of paint across the cave walls proves most agreeable with Reg.