Ten of Thailand's most popular comedians compete against each other for six consecutive hours. They try to remain totally impassive while attempting to make their competitors laugh.

After the elimination, the nine remaining contestants get back into the game and devise strategies, but all attempts at laughter fail.

The hosts punish one of the contestants for not taking part; the ping pong's surprise nearly breaks most of the contestants, adding a touch of humour and the unexpected.

A contestant is caught laughing just as Tum realises the uselessness of his joke book. Tum's attempt to invite friends almost backfires, but he manages to hold back his laughter.

In the intense fifth episode, the remaining contestants battle each other and themselves to hold back laughter. Tum's unique technique sparks controversy and the ire of many of the other contestants, just as Granny Zani comes to pick him up.

In this final episode, Kyutae's weakness for Ticha's antics gets him in trouble, while Phuak's attempt to trigger yellow cards with collective laughter fails. Hosts enact a no-laughing rule with red-card consequences for the last hour.