Zoe decides to leave her long-time co-pilot Hector after five years and requests a promotion to captain to fly a new route on the C919. Her superior warns that choosing this route will separate her completely from Hector, testing her resolve. Zoe confirms her decision, and she is assigned to Rotherham Airport for her new role. Meanwhile, Hector, who has quietly loved Zoe for years, confronts the painful truth that she has given her heart to another. The episode ends with Hector coming to terms with Zoe's departure and a growing emotional distance between them.