In this episode, Maddie visits a reservoir that collects water from our homes, natural springs and the rain. She heads to a draw-off tower, which takes water from the reservoir and carries it along underground pipes to a water treatment plant. The plant uses lots of different cleaning tanks to make the water really clean. She uses her special camera on a pole to see inside one of the tanks.

Next, Maddie visits a farm to find out how carrots grow from tiny seeds into big vegetables we can eat. She uses a special endoscope camera to see baby carrots growing underground. Afterwards, Maddie takes a ride on a harvester to see how carrots are dug out of the ground. Show less