Episode 1

Lily-Rose, Ant, Cat, Nature Chris and Skipper the dog travel to Northern Ireland, where the children are going to be zoo keepers at Belfast Zoo for the week. Skipper takes Nature Chris on a walk, where they meet Green Balloon Club members Lynne and Amy and find out the legend of the Giant's Causeway.

It's Jelly's first time in a sailing boat when she meets up with Robyn and Ben, who take her out exploring on Strangford Lough. And sisters Kathryn, Abby and Lucy introduce their pony Snoopy. Lily-Rose, Ant and Cat get their first taste of zoo life when they have to take the zoo register and they get to feed the ring-tailed lemurs. And of course the Green Balloon Club is never complete without a song - a special zoo song.