In the rooftop theft case at a key high school, all evidence points to the loner Jiang Xun. He is a troublesome, violent and marginalized person in the eyes of the whole school, destined to be abandoned and misunderstood. Until Wen Xu, who was first in grade, broke the rules and distance and stood beside him silently. It's not about love, it's just about trust. Together, they set aside the undercurrent and malice on campus, uncover the dusty past of the old building, and become each other's only light in a corner where no one sees them.