Li Xi bravely rescued the bullied girl Wang Xinle on her way to get off work, and was shocked to find that she was the daughter of her first love Wang Meng. Knowing how difficult it was for Wang Meng to raise her daughter alone, memories of the past came flooding back. As they get along, Wang Xinle develops a secret affection for Li Xi. How will this complex emotion that spans age and past develop? Can the dusty first love be continued? An entangled emotional story begins.