Mo meets mr. Lips which is charmed by his music, so she decides to bring him to a concert only to realize that he was an undercover agent which was suspicious about Charlotte Baked Potato.
A mysteryous smell from a purple slime of devious Pete turns into a virus when it makes all the bugs in the city go "Michael Jackson's Thriller" zombies look-like.
After Eddie saves a little roach from the wild, he wants to keep it with the name Edwina. The creature is sometimes behaving wildish but Eddie refuses to bring it back in the wild and things get even worse.
During Lady Mantis' prom day, Jade is back, and if Pebbledash stays with her she gets the golden pass, but the rest of the bugs are a little confused to give Jade a second chance. The point is Louie is still afraid of her.
Because of the cold breeze from AC unit, almost everyone in the city is in Waspital, especially Mo which fainted. Now it depends on Wilberforce and Chelle to fix it together.