This series follows the story of hundreds of people who are struggling with serious financial problems and feel trapped by debt, failure, and desperation in their everyday lives. One day, they each receive a mysterious invitation offering them a chance to participate in a series of games for an enormous cash prize. With little hope left and the promise of a life changing reward, they decide to accept the offer and travel to a secret location where the competition will take place. At first, the games appear to be simple children's games that many of them remember from their childhood. However, it quickly becomes clear that this competition is far from harmless entertainment. The rules are strict, the environment is controlled, and the consequences of losing are terrifyingly real. As the players move from one game to the next, they begin to realize that only a small number of them will leave with the prize, while the rest will face deadly outcomes. Under intense pressure, alliances are formed, trust is broken, and desperation pushes people to reveal the darkest parts of human nature. In the end, every participant must decide how far they are willing to go in order to survive and claim the fortune waiting at the end.