Lily-Rose, Ant, Cat, Jay, Sky and Skipper the dog travel Great Britain in a green hot air balloon finding out about nature and looking out for Green Balloon Club members down below. The Green Team makes nature worlds in a box, and Cat and Ant make an ocean in a box. Jelly visits friends in the Scilly Isles and goes rockpooling. Green Balloon Club member Harry visits his grandad's animal rescue centre and meets some tiny baby birds. Also, club members Rebecca and Christopher set the Spot of the Week.