Jae-suk is back with "PLAYou Level Up," where he will be defeating villains. First, he goes to Villain High School, and he must find who stole the Ethics exam papers. Follow his quest around the school investigating the students, and guess who the villain is!

Jae-suk must study to retake the college entrance exam. He moves into The Cartenon Mansion to study but hears a noise. Numerous people in the building create different noises, and he must find the true villain to go to college. Will he succeed?

Jae-suk retakes the CSAT and gets accepted by Cartenon University. He goes to an elective course and runs into a huge mess of chaotic students. Someone smashes the bust of Nuui the Second, and the professor tells Jae-suk to find the culprit. He must solve the case, or he'll be suspended!

Jae-suk becomes a civil service agent to fulfill his military duty after being suspended from Cartenon University. He must help the damage assessor to find who’s lying to stay in the hospital and receive insurance money for free. Will Jae-suk catch the villain?

Jae-suk levels up to a career navigator. He goes to an internet café and works part-time to figure out his career path, but a mysterious person warns him about a bomb. He must investigate the customers at the café and find out who planted the bomb. Will he make it?

Jae-suk goes to the Red Gate for the Middle Boss Battle. He may summon the villains that he's acquired so far, and they'll help him defeat the Middle Boss along the way. The Middle Boss, Lee Dae-ho, is not an easy opponent. Will Jae-suk manage to defeat him?

Jae-suk starts the episode as a job seeker. He's at the 2023 hiring process of the Villain Group, and he must pass the tests to join the subsidiary corporations to take them down from within. He goes through numerous interviews and tests. Will he succeed on any of them?

Jae-suk has his summoned characters in all the subsidiaries of the Villain Group, and now he must take them down one by one. His first target is Villain Trade. He gets information that Villain Trade is monopolizing the market, so he must find their ledgers as evidence!

Jae-suk fails to join Villain Media, but Dragon Club, one of his summoned characters, is. He enters Villain Media to stop its false advertisement and stop the consumers from buying poor-quality products. With Dragon Club's help along the way, he's on smooth sailing to stopping all their false commercials.

Jae-suk goes to Villain Trade as an employee with bad credit. He has information that someone from Villain Trade is trying to board a plane to launder money abroad. He must carry out an investigation and find out who the villain is. Will he succeed in finding the villain?

Followed by Jae Seok's win at Villain Trade, he's off to take down another subsidiary of the Villain Group. Out-of-Breath helps him sneak into Villain Finance, and he needs the help of Us to earn Play Coins, which will help him beat the odds in defeating Villain Finance.

Jae-suk becomes the director of the Villain Control Association after all the hardships. He must defeat the ultimate boss at Antares, and he has three stages before getting to the boss. In the last episode of the show, will Jae Seok defeat the boss of all villains?