Isabella Moreau, America's most feted aerialist, has given everything to the circus. But age and injury now threaten her security, and Isabella, stalked by old fears, makes a choice that risks everything. Then her daughter Mabel appears alongside the man who never wanted to see Isabella again, and she is forced to face the truth of where, and in what, she derives her worth. As Mabel and Isabella's lives become entangled beneath the glittering lights and flying trapeze of Madison Square Garden, their resiliency and resolve are tested as they learn the truth of what it means to be strong.