Lukas' mother has the last hours of her life left. Her biggest wish is for Lukas to have a child. So Lukas asks his neighbor Natalie, who is five months pregnant, to visit his mother in the hospital and tell her that she is going to have his baby. His mother is finally happy - Lukas fulfilled her greatest wish. Soon after, they receive some very happy news - a new heart donor has been found. After the operation, Lukas and Natalie must keep up the act to avoid upsetting his recovering mother. As they play the devoted couple, the web of lies expands, ensnaring family friends and Lukas's colleagues. The deception starts to turn Lukas's life upside down.