Darkwing is able to stop Quackerjack from blowing up the yo-yo factory and follows him with a tracking device he planted on Mr. Banana Brain. Darkwing and Launchpad follow Quackerjack to his hideout. Quackerjack gets away on his time top.
Darkwing and Launchpad go to Darkwing Tower and use the time machine from S.H.U.S.H. to follow Quackerjack to the year 1291 when the first yo-yo was invented. They land and meet up with Binketh and Darkwing tries to meet the king but finds out that Quackerjack is the king's (Herbeth) adviser. Quackerjack accuses Darkwing of being a sorcerer and Herbeth asks him to do a magic show.
Darkwing does his show and is terrible, but the king is obsessed with Binketh. Darkwing tells the king that he will make Binketh disappear and bring her back. Quackerjack sees his chance. When Binketh steps out of the box behind the curtain, Quackerjack grabs her and when Darkwing cannot make Binketh re-appear, he is thrown in the dungeon.
Quackerjack tries to get Darkwing to confess to being a warlock and after several attempts, Launchpad confesses for him. They take Darkwing to the courtyard to behead him and Launchpad tells Darkwing that eclipse is due that day, but Darkwing reads the book and finds out it's the next day. Darkwing stalls and the eclipse takes place and he is freed.
King Herbeth asks Darkwing to return Binketh and Darkwing says that he will do anything to accomplish that. Quackerjack has a couple of the officials declare that they have found Binketh tied up outside a dragon's cave and Darkwing now must resue her. The guards take Darkwing to the cave and force him to go inside. Once inside, Darkwing makes a deal with the dragon and he gets Binketh.
Quackerjack is elated because the king is giving up on the yo-yo since Binketh is gone. Darkwing shows up with Binketh and she tells the king that it was Quackerjack that kidnapped her. After a brief and funny fight between Darkwing and Quackerjack, Darkwing triumphs and captures him.