Invited to a secret streaming broadcast, Jae-in begins the "Falling Quiz Show," where she can win 1 billion won by answering only the truth. However, the host unexpectedly starts asking about the death of her younger brother Jae-ha, who recently died in an accident, leaving Jae-in flustered under suspicion that she may be connected to his death. Following the rules, the floor gradually opens while ropes tighten around Jae-in’s neck… Jae-in claims that Jang Doo-yeol, who had bullied Jae-ha since childhood, is the culprit. Jang Doo-yeol, kidnapped and brought to participate in the quiz show after being named by Jae-in, points to the owner of the chicken shop where Jae-ha worked as the real culprit, while the owner in turn accuses Jae-in. Amid endless mutual accusations and revelations, a “Chicken Game” among the three protagonists—rushing toward a catastrophe that could have been avoided—truly begins.