The RED Campaign to combat AIDS just announced their latest effort: a 30-minute documentary, directed by Lance Bangs and executive produced by Spike Jonze, that follows four HIV+ Zambians and traces their recovery after finally receiving the proper antiretroviral medication. Part of an ongoing program to increase public awareness of the effectiveness and affordability of AIDS medicine—just forty cents a day—the film will debut May 24 at 9pm ET on HBO, YouTube and Channel 4 in the UK. Watch the trailer above and a short but powerful celebrity PSA about the life-saving drugs after the jump.