"Though war rages across mainland Europe and London is strafed by German aircraft, the little village of Pipley in Hertfordshire bustles along much as it always has. Adrift since her best friend, George, joined the Royal Air Force, twenty-two-year-old Olive Bright fills her days by helping at her father's veterinary practice and tending to her beloved racing pigeons. Desperate to do her bit, Olive hopes that the National Pigeon Service will enlist...

Valiant and his feathered friends take to the sky to prove themselves as they work their way into the Royal Air Force during World War II. Together this rag-tag squadron of carrier pigeons engages in aerial adventures at a spitfire pace. From the first bumbling day of basic training through the final feather-raising mission, the flock of friends swoop their way toward victory.