Teenage elf brothers Ian and Barley Lightfoot get an unexpected opportunity to spend one more day with their late dad, so they embark on an extraordinary quest aboard Barley's epic van Guinevere. But when the boys' fearless mom Laurel realizes that her sons are missing, she teams up with a part-lion, part-bat, part-scorpion, former warrior -- aka The Manticore -- and heads off to find them. Perilous curses aside, this one magical day could mean more than any of them ever dreamed.