300 years ago, a pirate scourge sailed the seas, striking for truth and justice. That's right, believe it or not, that was a scourge of pirates! Darkwing Doubloon and his crew, Gosalyn, Stegmutt, Launchpad, and Gizmoduck have must battle the alleged pirate Negaduck and the Fearsome Four to keep them from making off with the king's jewels.

Negaduck steals a dimond that can steal other peoples powers. And after he steals the powers from,bushroot, megavolt, the luiquidator, and qukerjack, they have to use there weakneses to stop mega negaduck ( as he calls him).

Darkwing visits Morgana's parent's house and meets her family, who are upset to find out that she is dating a normal. Will Darkwing survive his visit with the McCawber family?