Jiang Xinyu didn't know how to introduce Fujiki Natsumi to others. Many years later, this boy stood in front of her without any warning, as if traveling through time and space, and said "How are you?" She was at a loss as to what to do, and opened the door to each other's hearts. The past is being pieced together bit by bit. What is the emotion between them? Will they finally break out of the prison? Can LJ's persistent pursuit finally win Jiang Xinyu's heart? They love each other, why would Xinyu choose to leave his side? Who is the true identity of the mysterious woman who suddenly appears? What kind of thrilling story happened between Xinyu and Xia Hai? Why has this memory been forgotten in a distant place over the long years?
The gloomy city, the sad memories, the warm humanity, the shining love. Strength and fragility, dedication and selfishness, jealousy and farewell, many contradictions are intertwined. Can everyone in the story finally raise their own sails and sail smoothly?