Jobless and apartment-less, Sam crashes with his aunt as a last resort and becomes reluctant camping-trip chaperone to her teenage son and a pal.

When Rumpelstiltskin destroys the Magic Mirror and escapes to the modern world, the four princesses of "Once Upon a Time"-Cinderella, Sleeping Beauty, Snow White, and Rapunzel-are sucked through the portal too. Well-trained and en...