Gus has never liked birthdays, but he gives in and opens what he assumes is Wally's birthday surprise - a box of Green Goo.

After admitting he is a banana, Lord Peel organizes a commemorative "Banana Day Parade" in order to lure Gus and Wally off a cliff. However, he also falls off and lands nearby a family of banana hillbillies, whose daughter wants to marry Peel.

Wally refuses to share his birthday party with Nefarious, who has been invited aboard the rocket ship for the day.

The monkeys realize Yay-Ok is holding in all his robo gas.

Gus and Wally desperately try to prove that they are different from one another, which interferes in their newest GASI mission.

Wally messes up the delivery of an alien brain, which actually boosts his IQ.

Gus and Wally transform a cardboard box into the S.S. Monkeyship.

YAY-OK shows the monkeys a panic room and they keep on making up emergencies, so they can go inside. YAY-OK gets annoyed with this.

When Gus and Wally can't open a ketchup bottle to put on their favorite banana bread, they enlist the help of GASI's most wanted criminals to open it for them.

It turns out that Inky is a rental, and his lease period is up.

Yay-Ok's popular comedy routine is fueled by monkey jokes, but Gus and Wally find out and refuse to give him any more material.