Sia has released a video for her new charity single “Free Me,” which supports the EndHIV initiative to develop a possible vaccine for HIV. The video stars Zoe Saldana as an expectant mother who’s just learned she’s HIV-positive, and features some narration by Julianne Moore. Like any Sia video worth its salt, “Free Me” has lots of athletic interpretive dancing. The song arrives on digital platforms tomorrow, June 9. Watch below.