Mordecai and Rigby were busy playing a new video game called "Mega Plumber Pals." They just got to the final boss and they were using their ice balls to kill Eggster. However, Mordecai died once an egg hit him. "Come on," he yelled, "freeze him." "I am freezing him," Rigby argued, "I'm Francis Bacon!" However, Rigby died too. "Nooooooooooo," Rigby screamed in sadness before it turned into pure rage. "Way to go, Mordumcai," Rigby yelled with anger. "If you had only killed the guy, we would not have gotten a game over." "How is it my fault," Mordecai replied. "It's time to go to sleep, anyway." So they went upstairs and slept.
Meanwhile, Mordecai and Rigby woke up in a green grass land with pipes, boxes, and a yellow sky. "You look so stupid, MordecaaaaaaIIIIIIIIIII," Rigby taunted laughing before it turned into screaming. They were dressed like plumbers. "What's the prank, Rigby?" "WHAT?! I DON'T KNOW WHAT'S GOING ON!" "The MPP," a high and squeaky voice said. It was a Side-Up. "The MPP are here to save Princess Poached!" Mordecai and Rigby looked at each other. "This is Mega Plumber Pals," they both said in unison. "OOOOOOOOOOOOOOOOOOOOOOOOHHHHHHHHHHHHHHHHHH!" "Listen, you two," the Side-Up explained, "Eggster has kidnapped the Princess. If you guys get her back, you will get coupons from Wing Kingdom." "Deal," Rigby said. And so, they went on their way to rescue the fair maiden.
After a half-decent journey so far, they went into the pipe they were told to go. "Augh, it smells like crap in here," Mordecai said. "Hey," Rigby said, "there is a poo ball blocking our way! I know we are plumbers but SHEEESH!" "Why don't we just snake it?" "Good idea. Hmpf." "Hmpf." "Hmpf." "Hmpf." "Hmpf." "Hmpf." "Hmpf. "Hmpf." And so, with a snake, they snaked it. And after that, they found Eggster's lair. "HEEEELP," the Princess shouted in her fair voice. "HEY, PRINCESS - " "Rigby! You'll alert the chicken guards!" "Sorry." And so, the jumped onto the chickens, dodged the eggs, and made it in.
Soon, they found themselves in a black damp metal room with the princess floating above a tub of hot lava. "HEEELP!" "PRINCESS," they both shouted in loud tones. Eggster was next to the pipe and laughed. "Soon, the lady will be flushed, and you will bid her goodbye! Get ready for a royal flush!" However, the lever was stuck. Mordecai and Rigby got an idea. They decided to fix it. Given they were such slackers, they pretended to fix it. Once Eggster flushed, he got into the tub, screaming as he was flushed away. "Thank you, Mordecai and Rigby." "So, where's our coupons?" "They're right over...WAKE UP," she screamed.
Soon, they both found out Benson was staring at them. "Benson, what's going on," Mordecai asked. "You two played that stupid video game for two days until you both passed out. "Aw nuts," Rigby said. "Now, you two morons rake the yard or else YOU'RE FIRED! Idiots," Benson muttered as he walked away. "Wanna play MPP," Rigby said. "Sure."