"Selma" Director Ava DuVernay is once again teaming up with Oprah Winfrey. According to Variety, Winfrey will join the cast of DuVernay's upcoming film adaption of "A Wrinkle in Time," the children's fantasy novel by Madeleine L'Engle. The story revolves around a young girl whose father, a government scientist, has gone missing after working on a mysterious project called a tesseract. Winfrey will play Mrs. Which, "one of the three Mrs. Ws that helps guide the children along their journey." The Disney project is the latest in collaborations between DuVernay and Winfrey, which include an upcoming drama series, "Queen Sugar," which will premiere on Winfrey's OWN network September 6th.