On the day of their 10th wedding anniversary, a husband and wife's happy everyday life takes a sudden turn. The husband, supposedly on a work assignment away from home, secretly returns, lying that he's too busy to come back, intending to surprise his wife with a celebration. He buys a ring, reserves a suite at a hotel, and prepares everything while imagining his wife's joyful expression. However, the moment he opens the door, he's confronted with a shocking scene that shatters all their happiness in an instant. Will this moment bring a new change to their marital bond, or mark the beginning of a new crisis? This drama unfolds the impact that small lies and expectations hidden within daily life can have on a marriage.