Breeanna was conceived via anonymous sperm donation, a fact she hid for most of her childhood. Now 17, Breeanna recently discovered that she has at least 15 half siblings fathered by the same anonymous donor, which has motivated her to find out more about her family's history. The docuseries "Generation Cryo" presents Bree's journey to meet as many of her half brothers and sisters as she can and hopefully gain their help to solve the biggest mystery of their lives: Who is their biological father? Along the way, what begins as a meeting of strangers becomes an intense and emotional bonding of family.