Ziyuan’s family has always embraced Christmas with great enthusiasm, but the festive spirit is dampened when his parents separate. After relocating to a new house, Ziyuan notices that ordinary items start disappearing, a dog appears on his way to school, and, most heartbreakingly, his parents seem to have lost their love for one another. Struggling to come to terms with these changes, Ziyuan resolves to recreate the “Christmas Eve Secret Room Miracle” in an effort to revive the cherished memories of past celebrations.