This description was taken from official source. Do not modify it.
A new game sweeps across the city, but instead of fun and frivolity, the game is a virus that knocks out everyone who plays it.
The Spider Queen gets mad about her recent defeat until Lady Bone Demon tells her that they need a special artifact for their plan, which was at the Cloud. After hearing about the Cloud, Syntax convinces the Spider Queen to let him go there to get the artifact, claiming that he can use his tech skills to take advantage of the Cloud, and creates a game called Sleep Bug to distract the citizens during the process.
Meanwhile at Flower Fruit Mountain, the Monkey King tells MK that he's leaving, as wanted to go on vacation after he chose MK to be his successor. While MK complains that something bad could happen, the Monkey King tells him not to worry and that he needed to take care of himself on his next journey. Once Monkey King left, MK briefly gets mad at him and went to Pigsy's Noodles to complained to his friends about Monkey King leaving, only to find them, along with the other citizens of Megapolis, asleep.
Sometime later, MK was with a sleeping Pigsy until he received another notification about Sleep Bug. He soon realized that the game caused everyone to fall asleep and decided to go to the Cloud to get rid of the game. Unbeknownst to MK, once he left, he accidentally caused Pigsy to go downhill after he went to the Cloud.
MK serves as the main focus character for this episode.
Mei, Pigsy, and Tang supporting but minor roles in this episode. Due to not knowing the truth about Sleep Bug, they all played the game and were put to sleep due to its effects. In the end, they all get mad at MK, who claimed that nothing bad happened after he saved the city, despite being indirectly responsible for putting Pigsy in a cast.
Syntax serves as the main villain of this episode. Upon discovering that one of the six artifacts that the Spider Demons needed was at the Cloud, Syntax convinced the Spider Queen to let him go there due to his tech skills. Furthermore, he uses a game titled Sleep Bug to put the Guardians of Knowledge and everyone else to sleep so he could steal one of the six artifacts that would help the Spider Queen conquer the city.