There are around 8000 children in Quebec conceived through a sperm donation. A lot of them feel a deep need to know who the man was that made their lives possible. This documentary follows the astonishing story of Andréanne, 31, owner of a dairy farm in Sainte-Françoise, and of Mark, 25, who studies biochemistry at Concordia University in Montreal. It takes a look at their questions about their identity and shares in their quest of finding out about the first chapter in their life stories.