Wild-hearted Si-Mao leaps from a diving board, only to plunge into an empty pool, freezing his life at youth’s brightest— and cruelest— moment. Comatose for 40 years, his accident reshapes his friends’ lives: Baobei finds comfort in his unknown twin brother in Japan; guilt-ridden Sun Jie flees to America; loyal A-Wen and disillusioned Mianyang drift between the underworld and reality. Outside time, Si-Mao’s soul watches them pay for love, atonement, and survival. When the old friends reunite, the brutal truth emerges. Amid the clamor, Si-Mao opens his eyes— to long-delayed redemption, or regret beyond repair?