It’s showtime! Six celebrities find themselves stranded on a mysterious island and are made to perform. Not for fame or glory, but for their freedom. Placed in unscripted improvisational scenarios, our six celebrities will have to be quick on their feet to garner the most laughs from the island's villagers, while they try to outwit each other for a chance to go home.

Phuak is shunned by the others after getting caught trying to escape alone. At showtime, a challenging improv performance tests their musical prowess. And a twist at the winner announcement leads to a shocking revelation about one of the scientists.

March learns a disturbing truth about the past winners. He warns Phuak and Peak to avoid winning or risk the same fate. However, they suspect this claim to be March’s ploy to get ahead, and they choose to ignore his warning. Dr. Ed takes advantage of this fracture between the celebrities and raises the difficulty level of the performances with the hopes of reaching optimum happiness index levels.

After having a change of heart, Dr. Yut plans to help the celebrities escape. In exchange, March, Phuak and Jack must help him in his romantic pursuit of Ticha. Jack receives another mysterious letter, challenging him to fetch the next clue from a dark cave. In order to achieve maximum happiness, Dr. Ed raises the bar even higher by making the celebrities perform simultaneously in the same scene.

The celebrities are shocked to discover the secret connection between Dr. Ed and Dr. Yut, which might finally help them escape the island.