Characters: - Han Ryu-su: A granddaughter of a chaebol family, she has grown up in love and protection, possessing a pure and warm heart, but like a flower in a greenhouse, she has never faced the cold winds. Having lived dreaming only of a life with her partner due to an arranged marriage established in her childhood, she falls into despair as if she has lost everything after being abandoned. Through the process of overcoming herself, she becomes stronger and grows. - Lee Nok-won: Coming from a working-class family, he sets and achieves his life goals regardless of his limited environment. He is a free-spirited and mentally strong person like a beagle puppy, but after contracting the 'Han Ryu-su incurable disease', he faces a crisis. After reuniting with Han Ryu-su, he strives for success to become a person worthy of her. The romance between the two is 90%, comedy 10%, work-related talk 5%, and a cute, wealthy grandmother 5%.