Ten years ago, Lin Wan lost his autistic brother Lin Chen at Hokkaido Station. That snowy afternoon became a nightmare that she could not escape from throughout her life. In the past ten years, she has grown from a young college student to a well-known illustrator, but there is always a searching figure hidden in every painting.
Lu Jingshen was his younger brother's last playmate before he went missing. His guilt turned him from a sunny boy to a taciturn lawyer, and he searched for him day by day for ten years. When a clue from a small town in northern China emerged, the two boarded a train heading for 37 degrees north latitude.
In that snow-covered town, they met a mysterious boy who could draw the North Star. The young man remained silent and just looked up at the sky when it was snowing, just like Lin Chen on the day he disappeared.
"How should we recognize him if we find him?"
"Let's just say that the snow at 37 degrees north latitude has never stopped."
