To save her grandmother and pay off a three-hundred-yuan bride price debt, Lin Wan signs a marriage contract with Lu Tingchen, the president of the Beijing Chamber of Commerce. Cold and taciturn, he seeks only nominal spouses living in separate rooms without interfering with each other. She keeps to her duties, neither humble nor pushy, straightening her back amidst the wind, snow, and gossip. Yet in their repeated interactions, he quietly breaks his rules—delivering porridge on a snowy night, protecting her from the shadows, and defending her publicly. She thought it was merely a mutual transaction, but long ago his heart defense had begun to loosen. A piece of marriage contract, originally a desperate dead-end trade, became the beginning of him letting down his guard and her finding a new lease on life in a desperate situation.