Scarlett Johansson  has proven herself a bad*ss many times over since taking on the role of Black Widow in The Avengers  franchise, and now she's taking her skills to a one-woman show. She plays the title character in Lucy, about a woman who inadvertently becomes a drug mule when strangers cut open her stomach and sew up a bag of advanced drugs into her body. After a severe beating, the drugs start leaking into her system, and she immediately starts exhibiting superior physical and mental powers. It sounds a lot like 2011's Limitless, but I don't remember Bradley Cooper  ever changing eye colors and developing telekinesis. Morgan Freeman  also stars as a brain science researcher who Johansson calls up. The movie opens Aug. 8; check out the trailer below.