The second series of the show that follows the skilled engineers and brave pilots who are on a mission to return history-writing planes to the air. In hangars and workshops across the UK. A rare Spitfire that escorted American daylight bombers over occupied Europe in 1945 is prepared for a new mission. Its home, the Shuttleworth Collection in Bedfordshire, faces financial difficulties - and engineers maintaining Britain's biggest fleet of flying vintage aircraft believe their iconic fighter can spearhead a recovery, if it can be returned to the sky in time.

Following the restoration of a Spitfire that was discovered as an unlikely plaything in a children's playground. The TE517 was built to fight Hitler but then became a pawn in the Cold War, before ending up in the Middle East. Engineers at Biggin Hill in Kent are determined to return her to the air and proudly restore her to her original markings as a member of one of the RAF's legendary Free Czech squadrons.