See You There
Mordecai and Rigby are cleaning the cart when Muscle Man pulls up at the front of the house and drops Benson and Pops off. They then ask what costumes they're wearing for Muscle Man's costume birthday party for Hi Five Ghost. They then say they're not invited and they can only come in if they are invited. They try and get Muscle Man to let them go, but refuses. Mordecai then thinks that he's not inviting them because when Rigby was choking that morning, his choke wad splashed soda in his face and his mad about what happened then. They apologize and give him their video game console as a peace offering but still doesn't invite them. That night, Rigby thinks it's going to be lame since it'll only be Pops, Skips and Benson there, doing nothing but realize thousands of people were invited and they try to just get in but the man guarding the front entrance doesn't allow them to come in. They try sneaking in and Hi Five's brother Low Five Ghost asks them why they aren't inside partying and they say they weren't invited and they just want to get in. Low Fives then says he can help them get in by turning them into ghosts so they can phase through the wall and when they're ghosts, they'll have costumes. They transform and go inside and Hi Fives realizes that they aren't wearing costumes and if they don't transform back soon, they'll be stuck as ghosts forever. Low Fives and Hi Fives don't know how to change them back so they call their father who says they need to scare someone to change back. They scare Muscle Man, who in the process has a heart attack. Muscle Man dies from it but they soon find out it was all a prank, so he can get them back from splashing soda in his face. Everyone leaves due to the party just being part of the prank. Muscle Man though stays and eats the food leftover and chokes. Mordecai saves him and they call a truce and Low Fives changes them back to normal. Muscle Man then lets them stay for the party and says it's now going to be a real one. Muscle Man then returns M&R's gaming system but it's paper mache since he sold it. M&R get angry at him for selling it but then pulls the actual system out from behind his back, pranking Mordecai and Rigby once again.
Characters
Main
Mordecai
Rigby
Muscle Man
Hi Five Ghost
Minor
Low Five Ghost
Hi Five Ghost's Father
Benson
Pops
Skips(cameo)
Bobby
Party Attendants
Mordecai
Rigby
Muscle Man
Hi Five Ghost
Minor
Low Five Ghost
Hi Five Ghost's Father
Benson
Pops
Skips(cameo)
Bobby
Party Attendants
Rigby giving Muscle Man a new soda Mordecai and Rigby as ghosts HFG worried about what happened to M&R