There are different missions for the cast members to complete each week. However, there is a rule that they have to follow each week without fail: they are not allowed to laugh until they successfully complete the missions given. Every time a cast member laughs, ₩10,000 will be deducted instantly from his appearance fee, and get wet from water coming out from the water backpack that each cast member will carry throughout.

At the end of each mission, the first placed cast member has his appearance fee paid in full.