Young Nemo journeys into the magical realm of Slumberland each night, befriending King Morpheus and exploring wondrous landscapes. However, when Nemo opens a forbidden door, he accidentally releases the Nightmare King, plunging Slumberland into darkness. With the kingdom at risk, Nemo must rally his friends and enter Nightmare Land to save the king and restore peace. An animated fantasy, Little Nemo celebrates imagination, friendship, and courage in the face of fear.