One is a Chinese who settled in Canada, Mu Xin;
One is a happy family of three, Beiman, Weiya and their son;
One is a strong, kind-hearted ordinary girl, Ji Wen;
A returnee who suddenly returned to China, Richen. . . . . .
What is it that connects the fates of these originally unrelated people? What is the relationship between them?
First? Cheating? Brother and sister? First love? Bad fate? Or bond?
Maybe it's a clichéd storyline, I can guess the beginning, but I can't guess the ending. Although cliché, everyone may see a different scene.