Ep 5. Oh Brother / Mighty Plumber

Oh Brother / Mighty Plumber is the fifth episode of the first season of The Adventures of Super Mario Bros 3. In this episode, Mario and Luigi must rescue their friend Toad from a group of Koopas who captured him. Toad was on a walk through the woods when he stumbled upon a group of Koopas who were building a giant robot. The Koopas captured Toad and brought him back to their base.

When Mario and Luigi hear about Toad's capture, they immediately set off to rescue him. They quickly discover the Koopa base and begin to formulate a plan. They decide to dress up as Koopas in order to sneak into the base undetected.

While in the base, Mario and Luigi manage to rescue Toad and sabotage the Koopa's robot. However, their rescue mission is complicated when they run into one of Bowser's brothers, Kooky Von Koopa. Kooky is determined to stop Mario and Luigi, but they manage to outsmart him and escape with Toad.

In the second half of the episode, Mario and Luigi discover a magical golden plunger that grants the user incredible strength. They use the plunger to defeat a group of Koopas who are attacking the Mushroom Kingdom.

However, Bowser soon discovers that Mario and Luigi have the magical plunger and sends his minions to steal it. Mario and Luigi must fight off the Koopas and protect the plunger in order to save the Mushroom Kingdom from Bowser's wrath.

Overall, Oh Brother / Mighty Plumber is an action-packed episode filled with adventure and humor. Fans of the Super Mario Bros franchise will love seeing their favorite characters in action as they battle against the evil Koopas and Bowser.