The male lead died and went to heaven, leaving his pregnant wife behind. When he got to heaven, he was so mad over his death that two angels forgot to give him a shot so he would forget his past life. When he was reborn, he remembered everything. He unkownlingly fell in love with his past self's daughter, but he met her mother (his wife in his past life) and started dating her again. (Source: MyDramaList)