Facing a drifting marriage life, 35-year-old lawyer Jiang Lai proposes divorce to her husband Lu Xishi. The next day, the 25-year-old Lu Xishi from ten years ago—the man who had just married her—unexpectedly time-traveled and broke into the home. Under the same roof, the 35-year-old husband is silent and enduring, while the 25-year-old husband is enthusiastic and straightforward. Amidst the chaotic daily life of the three, she gradually uncovers the secret her husband has hidden for many years. Misunderstandings and reconciliation, loss and reunion, the three embark on a fantasy redemption about love.