Description：Cha Soon Bong (played by Yoo Dong-geun)'s wife passed away early, leaving behind three children, Cha Kang-sim (played by Kim Hyun-joo), Cha Kang-jae (played by Yoon Bo), and Cha Dal-bong (played by Park Hyung-sik). After countless hard years, Cha Soon Bong finally raised his three children. However, as time went by, Cha Soon Bong found that the relationship between him and his children was becoming more and more indifferent. Cha Kang-sim is a strong woman in the workplace. Although her career is booming, she is inevitably subject to gossip from others because of her blank emotional life. Cha Kang-jae's upcoming happy life was completely disrupted by an "illegitimate child" he was unaware of. Cha Dal-bong is mediocre, but successful in love. When Cha Soon Bong learned that he had a terminal illness and his time was running out, he decided to use "unfilial litigation" to give his children a last lesson.