A challenge from her little brother and a Chinese fable inspire Lani Li to hit every note of invincible bravery on her band trip to London.

Thirteen-year-old Lani Li has grown up with the tale of the Eight Invincible Brothers—Chinese heroes who use their superpowers to conquer challenges. Lani wishes she could be as brave as them, especially as she faces her own test of courage . . .

When Lani's elite performance band is chosen to perform in London, she should be thrilled. But with too many fears to count and her little brother, Gavin, unable to join her due to a serious heart condition, the trip feels more daunting than exciting. Before Lani leaves, Gavin gives her a challenge: tap into her own hidden strength by embodying the Eight Invincible Brothers—and each of their special powers.

In London, Lani creates her own “invincible list” based on the fable, and as she checks off each quality, she discovers that these “superpowers” might not be as farfetched as they seem. But when the final challenge demands that she face a daunting fear—running down the famous Cooper’s Hill in a wild cheese race—Lani wonders if she has what it takes to complete the list.

With her brother’s courage as her guide, can Lani conquer her fears and prove she’s invincible in her own way? Or will this last challenge be the one that defeats her?