According to CtR himself, his cousin Nicole appears in the video, along with a choir. Throughout the clip, you'll see Chance and Jay Elec performing in front of the women.
"It’s so different from my other videos," Chance tweeted, encouraging viewers to lock their phone in horizontal position to best see the vid. If you're on a computer, you better be ready to turn it sideways.
See the "No Problem" video here, then watch a throwback Chance the Rapper interview: