When motivational speaker and fitness guru Danny Johnson was only 13 years old, she learned that her biological father was a mystery sperm donor.

At the time, she was stunned and burdened by her family’s secret in a way that completely upended her sense of self all through her adolescence, and well into adulthood.

But 23 years later, with the help of 23andMe, Danny has discovered not just her biological father, Bruce, but 21 of her donor siblings, completely redefining her and her half-siblings’ notion of family and identity. Click here to watch on Vimeo.