This is a saga of a family headed by a single mom. The story revolves around her children, their loves, heartbreaks, and tragedies. The story is very realistic and the acting is superb. Although there are many relationships going on at once, the love affair between Kim Myung Min and the breathtakingly beautiful Han Go Eun was especially touching. I never, ever watch dramas over 20 episodes and this was an exception. I really did not want it to end, I got so attached to the characters. The mother made so many sacrifices raising her children, that, in the end, they were grateful to do the same for her. In my opinion this is a "must watch" classic.