Xiao Yu, a senior high school student in a key middle school, is a self-isolated father due to family financial pressure and a failed marriage in the past. There are only two things in his world: ensuring that his son succeeds in the college entrance examination, and executing the cold divorce agreement with his wife Lin Wei after the college entrance examination. This marriage, which had lasted for twenty years, completely collapsed because he secretly concealed a debt of 100,000 yuan a few years ago. Although he silently shouldered all the repayments, the rift in trust could no longer be healed. However, when "divorce after the college entrance examination" became the only countdown in his life, his seemingly determined wife Lin Wei used her silent watch (replying messages instantly, likes in the circle of friends, shouldering 98% of the real estate but leaving him 1%), the sudden declaration of "not leaving", and the hidden truth behind it, to pull him out of the abyss of self-punishment. Xiao Yu must make a dilemma between "fulfilling the agreement to fulfill the other party" and "seizing the last chance to save his beloved". What stands between them is not only long-standing misunderstandings, real debts, unfair property rights, but also three villains with their own agendas (debt collectors, relatives who instigate discord, and old friends who have designs on Lin Wei), as well as the "impossible task" of his son's college entrance examination, which cannot be missed. This is a battle about the rebuilding of trust, self-salvation and the counterattack of middle-aged love. Can Xiao Yu untie all the knots in his heart before the bell rings the end of the college entrance examination, and let the expired agreement become a new starting point for love?
