When Mother Duck calls on Grandfather Duck to entertain her three ducklings, Grandfather Duck obliges with a riotous visit to a nearby pond, where the ducklings tempt fate by taunting a cat, trying to eat a poisonous plant, and attempting to fly off of a very large rock.
When Harper and her friends discover that their trusty robot, Marvin, has gone missing right before the big competition, the team must unravel the mystery.
