Thinking his rival, Dr Vaabit, has sabotaged his avocado plants, the Professor wants revenge. Alex and Cara get into trouble when farming some of Dr Vaabit's bees in a cabinet.

Can the Lab Rats stay up for seven nights in a secret underground government facility without killing each other?

Why has the lab got a pigeon loft? Can Alex prove his dad has really found Captain Scott's diary? And why is the Prof making Brian flirt with a weather machine?