Su Wanting from the Jiangnan water town is a gentle businesswoman guarding Tinglan Pavilion. She is innocent and soft, but has good business intelligence. However, she is not deeply involved in the world and always lacks some confidence when encountering difficulties. Xie Xunzhou, a boat fisherman from Tinglandu, has a handsome face and his coarse fishing clothes cannot hide his character. He seems to be an ordinary man on the water, but he has poetry and writings in his belly and has hidden martial arts as a knight. When a merchant was making things difficult for him, Xie Xunzhou accidentally gave him some advice. Seeing that he was extraordinary, Su Wanting plucked up the courage to become his disciple. He accepted her as his disciple, taught her about poetry and calligraphy at the bow of a fishing boat, taught her how to protect herself from the conflicts in the market, and taught her how to do business at Bibo Ferry. Master and apprentice accompany each other day and night. In the mist and rain in the south of the Yangtze River, the innocent businesswoman breaks into the heart of the mysterious fisherman. His tenderness is hidden in the support of the boat and the whispers of advice. A love that begins with master and apprentice and ends with deep affection slowly grows among the blue waves of Tinglandu.