away from their mother and placed them in foster care, simone's maternal grandfather ron biles and his wife nelliell from the social worker, said the kids were in foster care. i wasn't aware that it was that bad. i mean, just the thought of them being in foster care it just sounded so bad, and at that time we had the ability to take care of them. so, 'send them to me.' >> alfonsi: simone and her sister adria were eventually adopted by their grandpa ron and grandma nellie. >> biles: they were like, 'you guys can call us mom and dad if you want.' and i remember going upstairs and practicing. and then ran down and i was like, 'mom? dad?' >> alfonsi: i mean, you hit the lottery with these two, right? >> biles: yeah, i did. i'm, i was very blessed. >> alfonsi: seeing simone somersaulting around their living room, her new parents put her in gymnastics out of self preservation. simone was tiny and a little wobbly at first, but she was fearless. by the time she was 16, she won the all-around title at her first world championships in 2013. she hasn't lost since. biles also brought a love of fun to u.s. gym