Woo Ri is just about to make her decision on who she is going to marry. But out of the blue, she ends up with appendicitis and gets rushed to the hospital. After Woo Ri recovers, she proposes to the one she knows will always be by her side. Meanwhile, Woo Ri's daughter, Ri Woo, comes into this world. And soon after, they celebrate her 100th day as a big happy family.