It is based on other versions of the original Belgian TV series The Mole that have aired in numerous countries.
The series is a reality competition in which the contestants work as a group to add money to a kitty that one of them will win.
Among the contestants is one person who has been designated "the Mole" by the producers and is tasked with sabotaging the group's money-making efforts.
At the end of each episode, the contestant who knows the least about who the mole is, as decided by the results of a quiz, is eliminated from the game.
The assignments may require physical skill, mental acuity, keen strategy, or all three from the players for them to be successfully completed.
Assignments often have explicit rules attached to them, with monetary penalties from the pot assessed if they are violated.
Sometimes, contestants are offered the chance to give up their free pass in exchange for a particular amount of money to be added to the kitty; however, they must still take the quiz and remain vulnerable.
In this case, a contestant would have had to have bid money from the kitty to buy the free pass, with the highest bidder being awarded the exemption.