Nali has spent most of her life silently in love with Prince Walu, the brilliant and disciplined warrior who also happens to be her older brother's best friend. But to him, she was always just the little sister who followed them everywhere, lurking in the shadows. When his royal engagement is unexpectedly broken off, Nali offers him comfort and wisdom, only to discover that she's being drawn into his world in ways she never imagined.

While Walu trains her in martial arts, Nali proves that she is not only strong in skill, but also brave and strong-hearted.