Complex sentence: Learning that the corn can make reindeer fly, Jessica gives some of it to Kris's reindeer friends and with their help, the Kringles, Kris, Topper, and Winter escape.
Split into simpler sentences: Learning that the corn can make reindeer fly, Jessica gives some of it to Kris's reindeer friends. With the reindeers' help, the Kringles, Kris, Topper, and Winter escape.