One day, three siblings receive a postcard from their mother who left them a long time ago. But all it says is "I miss you." Three siblings are disconcerted by the sudden contact, but eventually, they go on a trip to meet their mother.

两年前的一场意外，让孝真失去她挚爱的丈夫。32岁的她还没走出丧偶之痛，老天又交给她一项难题，她必须照顾老公与前妻生下的儿子钟旭——正值叛逆期的16岁青少年。孝真尝试打开心房与钟旭相处，但钟旭不领情，他跟著好友四处游荡，直到发现好友怀有身孕......

When her son gets critically injured in a car accident, a mother discovers that there's more to his relationship with his friend than she had thought.