Jin Chengjun, a boy who has been dependent on his mother since childhood. There is a little less fatherly love and fatherly guidance, but a little more pampering. He didn't know how to cherish, and God finally gave him a huge punishment. The mother of the last big tree also passed away unexpectedly. For that memory of his childhood, he entered the orphanage and went back and forth many times, just to get to the girl in his memory. He fell in love with the girl and used his last drop of blood to protect her. When the girl thought of those short memories, the two finally fell in love, but broke up because of reality. Because of love, he spent a period of time that was worse than death, just to fulfill his promise to the girl.
When he returned to the girl, he found that the vow he had made had become a thing of the past. What will happen to him? Why was he willing to silently protect the girl for his whole life?
One is an orphan, and the other is a girl who finally found happiness! How will the story develop, and what will be the ending of Kim Sung-jun and this girl?