Sofie Dossi is a self-taught contortionist and hand balancer. She became captivated at age 12 after watching an online video. Having been a competitive gymnast and dancer, she had a great foundation of strength and flexibility and advanced her skills using YouTube videos as her teacher, combined with disciplined practice at home. Within a year, she began performing at family and friend celebrations and gradually caught the eye of entertainment companies that began to hire her for larger events.
Dossi's inspiration is to enthrall audiences by showing them a unique performance they have never seen before, so she is always motivated to create innovative shows. 
Sofie Dossi's audition in Episode 1105 consisted of bending her knees over her head and balancing on one hand on a cane. With her legs still bent, she then grabbed an apple with her legs and took a bite out of it. Finally, while performing a handstand, she shot a bow with her feet and hit a target feet away. Howie Mandel, Mel B, Heidi Klum, and Simon Cowell all voted "Yes," sending Sofie to the Judge Cuts.
Sofie Dossi's Judge Cuts performance in Episode 1108 consisted of hanging on an elevated hoop by first the back of her neck and then the bridge of her feet. Next, she hand balanced on rotating canes. Finally, she shot a bow with her feet and hit a target with a flaming arrow feet away. Howie Mandel, Mel B, Reba McEntire, and Heidi Klum gave her standing ovations. Impressed by the performance, guest judge Reba pressed her Golden Buzzer for Sofie, sending her straight to the Quarterfinals.
Sofie Dossi's Week 2 Quarterfinals performance in Episode 1113 consisted of reaching the stage from the Aerial Silk. Next, she balanced on her hands on two canes while contorting her body. Finally, while blindfolded and after being rotated on the canes one full rotation, Sofie shot a bow with her feet and hit a target with a flaming arrow feet away. Howie Mandel, Mel B, Heidi Klum, and Simon Cowell all gave her standing ovations. Sofie received enough votes to be sent to the Semifinals in Episode 1114 instead of Flip and Ryan Stock and AmberLynn.
Sofie Dossi's Week 2 Semifinals performance in Episode 1119 consisted of balancing on one hand on a rotating cane while her legs were bent over her back, hanging on a quickly spinning elevated hoop by her bent back, and finally hanging on the hoop by the back of her neck while doing the splits. Howie Mandel, Mel B, Heidi Klum, and Simon Cowell all gave her standing ovations. Sofie finished in fourth, fifth, or sixth place in America's Vote. In the Dunkin' Save, Sofie received more online votes than both Steven Brundage and Viktor Kee, sending her to the Finals in Episode 1120.
Sofie Dossi's Finals performance in Episode 1121 consisted of balancing on one hand on a rotating cane while her legs were bent over her back, performing multiple fast back walkovers and hanging on a quickly spinning elevated hoop upside down. Howie Mandel, Mel B, Heidi Klum, and Simon Cowell all gave her standing ovations.
For the finale in Episode 1122, Sofie Dossi performed aerial tricks while Viktor Kee juggled and Laura Bretan sang "Nessun dorma" with Il Volo. Sofie did not receive enough votes to be included in the Top 5, eliminating her from the competition instead of Grace VanderWaal.