Kim Seungmin and Hwang Hyunjin—once inseparable lovers, now bitter exes—find themselves forced into the annual senior game, where their entire grade competes in a ruthless challenge of dares. Tension has lingered between them since their messy breakup, but the stakes rise when Hyunjin’s new lover, eager to assert dominance, dares Seungmin to walk across a narrow plank suspended over the clear waters of the Han River.

The problem? Seungmin can’t swim.

As the crowd gathers, excitement and nerves buzz in the air. Whispers spread like wildfire—will Seungmin back down and admit defeat, or will he risk it all? With his pride on the line and Hyunjin watching from the sidelines, something shifts in the air. Hyunjin knows Seungmin’s greatest fear, but will he step in before it’s too late?

As the plank wobbles beneath Seungmin’s hesitant steps, past wounds resurface, old emotions reignite, and the question remains—will this dare push them further apart, or will it bring them back together in the most unexpected way?

—-

Hyunjin stood behind the crowd, anxiously watching… he doesn’t know what to do…