Bushroot creates a formula intending to create an intelligent plant friend, and Gosalyn ends up sampling it. Now Darkwing has a limited amount of time to find a cure before Gosalyn, half-slime, half-duck, melts into a pile of goo.

Helping with Gosalyn's homework, Darkwing shows her famous Mallards from history. She sneaks back into time with Quackerjack's timetop and brings them to the present. None of them seem to be as great as they were thought to be. When Megavolt steals Darkwing and Launchpad's nervous energy, the failures have a chance to prove they are heroes at heart.