Many years ago, Grandpa was a World War II flying ace, but sadly he is now suffering from Alzheimer's disease. When his family can no longer look after him, he is moved to Twilight Towers, an old people's home. It soon becomes clear that Miss Dandy is running Twilight Towers for her own ulterior motives, and it is up to Grandpa and grandson Jack to make a daring escape. Failure could have the direst of consequences, but success will give Grandpa a final chance to relive his past and take to the sky once again in his beloved Spitfire.
| Directing | Elliot Hegarty | Director |
| Camera | Richard Mott | Director of Photography |
| Costume & Make-Up | Julie Dorrat-Keenan | Makeup Supervisor |
| Sound | Gwilym Perry | Foley Editor |
| Crew | Andy Merchant | Stunts |
| Camera | Alan Maxwell | Camera Operator |
| Crew | Chris Pollard | Stunts |
| Crew | Chris Lyons | Makeup Effects |
| Costume & Make-Up | Jacqui Mallett | Makeup Department Head |
| Crew | Karie-Ann Robinson | Chaperone |
| Art | Iain McDonald | Production Design |
| Costume & Make-Up | Jacqui Mallett | Makeup Designer |
| Costume & Make-Up | Cathy Prior | Costume Supervisor |
| Art | Suzanne Field | Art Direction |
| Directing | Lucy Enfield | Script Supervisor |
| Sound | Matt Biffa | Music Supervisor |
| Production | Francesca Falchi-Pereira | Production Coordinator |
| Editing | Peter Oliver | Editor |
| Visual Effects | Tim Zaccheo | Visual Effects Supervisor |
| Lighting | Dave Thom | Gaffer |
| Lighting | Conor Mackenzie | Lighting Technician |
| Camera | Martin Newstead | Steadicam Operator |
| Editing | Amy Swan | Assistant Editor |
| Writing | Kevin Cecil | Adaptation |
| Writing | David Walliams | Writer |