Captain Green is back and this time he's creating a gadget to help save the planet. As he fine-tunes his invention, disaster strikes. Hornbill's tree has been chopped down and there's tree trouble for Elephant and Orangutan too. Captain Green scrambles to finish his invention—a TREE MACHINE—and zooms to the rescue! ZAP! ZOOP! ZINK! Trees pop up everywhere until… BANG! Oh no! How will Captain Green save the animals now?