Rhiannon Leigh Wryn (left) is Emma and Chris O’Neil is her brother Noah in “The Last Mimzy,” opening today at Alderwood Mall, Galaxy Monroe, Marysville, Mountlake, Stanwood, Metro, Woodinville, Blue Fox Drive-In and Cascade Mall. Based on “Mimsy Were the Borogoves,” an acclaimed science-fiction short story by Lewis Padgett, “The Last Mimzy” tells the story of two children who discover a mysterious box that contains some strange devices they think are toys. As the children play with these “toys,” they begin to display higher and higher intelligence levels. Emma tells her confused mother that one of the toys – a beat-up stuffed rabbit – is named Mimzy and that “she teaches me things.” As the adults become increasingly worried, a blackout shuts down the city and the government traces the source of the power surge to the children’s home. “The Last Mimzy” features an ensemble cast including Timothy Hutton, Joelly Richardson, Rainn Wilson and Michael Clarke Duncan. The movie is rated PG for some thematic elements, mild peril and language.