From the bestselling author of the Ranger in Time series, Kate Messner, comes a chapter book series about a family dedicated to rescuing animals. Siblings Ivy and Ezra couldn't be more different, but they have one thing in common: a love of animals. Their family volunteers for the local wildlife hospital as "critter couriers", helping transport injured and orphaned animals so they can get medical help. Ezra starts off his new baseball season in a batting slump, fearing that he's not as good a player as the others on his new team. Then, while playing with his friend, Ezra finds two baby screech owls that seem to have fallen from a nest. Ivy and Ezra's family transports the owl chicks to the wildlife hospital, but because their tree was damaged in a recent storm, they're unable to return to their original nest. Feeling anxious about his own place on his baseball team, Ezra worries that the baby owls will feel scared and alone. Determined to help the owlets however they can, Ezra and Ivy decide to build a human-made nest for the baby animals. Can Ezra find his batting groove again and help the owls return to the wild?