The POstables are on a mission to deliver a soldier's letter from Afghanistan to a teenager who's being relentlessly bullied, while Oliver's estranged father surprises him with news that shakes him to his core.
| Actor | Role |
|---|---|
 Eric MabiusOliver O'Toole | Oliver O'Toole |
 Kristin BoothShane McInerney | Shane McInerney |
 Yan-Kay Crystal LoweRita Haywith | Rita Haywith |
 Geoff GustafsonNorman Dorman | Norman Dorman |
 Ben AffulPilot | Pilot |
 Megan CharpentierPhoebe Amidon | Phoebe Amidon |
 William B. DavisHarper | Harper |
 Tammy GillisRandilynn Amidon | Randilynn Amidon |
 Gregory HarrisonJoe O'Toole | Joe O'Toole |
 Robert MoloneyCaptain Markham | Captain Markham |
 Jill MorrisonHazel the Mail Carrier | Hazel the Mail Carrier |
 Beckham SkodjeYoung Oliver | Young Oliver |
 Jill TeedHarriet, Mr. Schmidtz's Lawyer | Harriet, Mr. Schmidtz's Lawyer |
 Aliza VellaniNilofer | Nilofer |
 Marc-Anthony MassiahCornell | Cornell |
 Sophie LuiReporter | Reporter |
 Maddie PhillipsTrainee | Trainee |
 Curtis LumTrainee | Trainee |
| CCruze HurleyCruze | Cruze |
 Donny LucasStaff Member | Staff Member |
| Beckham SkodjeOliver (3 Years Old) | Oliver (3 Years Old) |
 Matthew GrahamYoung Joe | Young Joe |
 Alex FerrisAlex | Alex |