Dotty trains Oso to drop water balloons on a target from high up in the air. But Oso goes too fast, misses the target and made Wolfie wet. That is when a special alert comes in. Oso helps a boy, Wyatt, build a fort out of a cardboard box from which a new refrigerator came in.
- Oso uses his grappling hook pen to pull down the top of the box for Wyatt's fort