In parallel stories, Bone, an orphaned dog, finds and loses a series of homes, Molly, a family pet, helps Charlie through the grief and other after-effects of his brother's death, and lonely Henry pleads for a dog of his own.

"Bella was once a lost dog, but now she lives happily with her people, Lucas and Olivia, only occasionally recalling the hardships in her past. Then a weekend camping trip turns into a harrowing struggle for survival when the Rocky Mountains are engulfed by the biggest wildfire in American history. The raging inferno separates Bella from her people and she is lost once more. Alone in the wilderness, Bella unexpectedly finds herself responsible for...

While her father is away at war, eleven-year-old Princess ignores his warning that pet ownership leads to pain when she raises an orphaned possum on their Oklahoma ranch, then tries to send it back to the wild.