Walking through the misty Florida woods one morning, twelve-yearold Rob Horton is stunned to encounter a tiger — a real-life, very large tiger — pacing back and forth in a cage. What’s more, on the same extraordinary day, he meets Sistine Bailey, a girl who shows her feelings as readily as Rob hides his. As they learn to trust each other, and ultimately, to be friends, Rob and Sistine prove that some things — like memories, and heartache, and tigers — can’t be locked up forever.