When 15-year-old Emma lands a competitive spot on a young women's equestrian acrobatics team, she is taken under the wing of her slightly older peer Cassandra. Obsessed with strength and control, Emma covets Cassandra's natural grace and poise, while Cassandra in turn silently desires more than just Emma's discipline. The psychological stakes of their friendship intensify as the two jockey for top position, and loyalty is traded for unbridled power. Meanwhile, Emma's curious and innocent eight-year-old sister (in a remarkably complex performance delivered by rising star Isabella Lindquist) is prematurely spurred to confront the treacherous frontiers of sexuality and womanhood on her own.