After an unexpected accident, Li Changle returns to a fishing village by the sea in 1983. His father is still alive, his wife has not left him, and his two young children are still playing affectionately around his knees. Returning with memories of his past life and a heart full of regret, he knows how much untapped wealth lies hidden in these waters and how many missed opportunities he must make up for. The secret sea cave behind Yantou Mountain, precious seafood revealed by the tides, and an impending maritime disaster—all this time, he intends to reclaim the days he once threw away. But will his wife, whose heart has grown cold over the years, be willing to trust him once more?