'Marriage Contract' is the story of a man who only values money and a woman whose life hangs by a thread. Their extreme pairing shows the power of true love in all its lightheartedness and sorrow. Han Jihun, who is Head of Strategy for restaurant Promise, is haughty and cold, a golden boy born into wealth and privilege. He works hard and plays hard, but in the end he is intelligent and has good business sense. Kang Hyesu works as a sous chef at restaurant Promise and as a single mother lives with only her daughter. Her husband died many years ago, leaving her saddled with his debt. On top of that, she has an incurable disease. Her life is full of exhaustion, but for her daughter’s sake she never gives up on optimism. With such different backgrounds, can these two overcome the odds and find true love?