The crew have been infected with a mysterious virus that turns them white. Dokko and his team research how viruses work and find a cure.

Wally is sick. Dokko and Carlin want to create tiny nano robots to help him fight his illness.

Barry has grown a huge pumpkin, but he's worried that caterpillars will eat it. The crew work out ways to keep the pumpkin safe.

The crew take a winter vacation. But the resort is abandoned and has no power! To keep warm, they search for a new source of energy.