The animals still aren't convinced after Noah's attempts to persuade them. The animals board the island without Noah. Meanwhile, Reg and Sacha are requested to help the Queen Frog.
Earthquakes are becoming more frequent in Diamantina. Gertie realises that Diamantina is not a safe place to raise her unborn baby, so despite Noah's protests, the Animals prepare to leave Diamantina for good. Ursula is elected as a new captain.
The animals take pieces from Diamantina's coral reef to help Gertie decorate her cave, but the removal of coral from the reef has unexpected repercussions. Noah joins Sacha's newshound team to head spread news faster.
Boredom sets in to the residents of Diamantina. The frogs and Reg set off to find the very rare Diamantina Rose, which only grows once every 100 years. Sacha meets the frog he saved a while back, and is asked to teach the frog some circus tricks.
Noah's Island was an animated children's television series made by the creators of The Animals of Farthing Wood and commissioned by the European Broadcasting Union. It was directed by Philippe Leclerc and Alan Simpson and written by Elphin Lloyd-Jones and John M. Mills. Each episode, of which there were 39, ran for 28 minutes. Although not as successful as Farthing Wood, it was fairly popular on Saturday mornings in many of the homes of the United Kingdom, particularly with its younger target audience. Based on the Bible story, Noah's Ark, the series was praised for its characterization, imaginative storylines and for introducing ecological themes in a way that delighted children.