Usher, Priyanka Chopra Jonas and Julianne Hough to host CBS Global Citizen reality competition series The Activist

Deadline

The five-week reality series, premiering Oct. 22, features "six inspiring activists teamed with three high-profile public figures working together to bring meaningful change to one of three vitally important world causes: health, education, and environment," according to Deadline. "Activists go head-to-head in challenges to promote their causes, with their success measured via online engagement, social metrics, and hosts’ input. The three teams have one ultimate goal: to create impactful movements that amplify their message, drive action, and advance them to the G20 Summit in Rome, Italy. There, they will meet with world leaders in the hope of securing funding and awareness for their causes. The team that receives the largest commitment is celebrated as the overall winner at the finale, which will also feature musical performances by some of the world’s most passionate artists."