A new swimmer arrives at the pool and is quickly briefed by a teammate about the intense training schedule, which includes mandatory Sunday physical practice and permission-required night swims. The new member learns about Lee Taemin, the school's top swimmer who has suddenly refused to enter the water for over a month, puzzling everyone. As the conversation ends and the new swimmer experiences a painful moment, they reveal a grim decision: to die within a week, likely by drowning. The episode closes on this disturbing resolve, leaving the reason and consequences unexplored.