“Gunpowder Milkshake” (**1/2 out of four) was a groovy action comedy about a group of crime-fighting women (Michelle Yeoh, Angela Bassett, Carla Gucino, Karen Gillan, and others) who fight back against sinister and evil forces that threaten them and also possibly world domination. Engagingly directed and told with wall-to-wall soundtrack, one-liners, and action which overpowers an extremely thin and feeble storyline. After a while, film starts to grow monotonous as it resembles a video game. Great cast compensates to some degree but this is a “milkshake” of tasty but empty calories without any filling.