Astrophysicist Ning Zhiyuan presents a groundbreaking theory at an international academic conference, only to face skepticism. Downhearted, he returns home early. On a stormy night, his flight is diverted to a nearby city. While driving back in a rental car, he swerves to avoid a cat and crashes into a road sign, leaving the car stranded. With no cell signal, he walks through the rain toward the nearest light and finds the Starry Sky Picture Book Shop. Soaked through, he opens the door and comes upon the owner, Jian Xingchen, dancing on a whim. Their eyes meet. She is barefoot, with colored pencils tucked into her hair.