Aliens Coming, a new musical at the Peoples Improv Theater, is a comedic take on low-budget sci-fi movies with a blatant naughty streak. The plot is pulled from some of the best/worst episodes of Mystery Science Theatre 3000 with some modern touches, and it centers on two teenage girls, Brandi and Clementine, who are about to graduate from high school. They have been best friends since they were kids, but Clementine’s interest in art (and the “cool art kids” culture) is pulling them in different directions. When Brandi is abducted, however, Clementine sets out to save Brandi and the world’s genitals from a prudish alien race. Along the way, Clementine finds herself and loses her virginity, and Brandi becomes a YouTube make-up tutorial star. Really, it’s a typical coming-of-age tale of friendship and following your dreams. Nothing out of the ordinary here.