It is the night before the fair marking the Kingdom of Guardia's one-thousand-year anniversary. Once the humans have gone to sleep, eager for the next day's festivities, the monsters emerge to play. Nuu and Mamo are two small monsters eager for their own adventure through time and space, and their group, Nuumamonjaa, is recruiting new members. Since neither is particularly sharp in the brains department, their adventure turns into a disaster as they stumble from one mishap to another. A fast-drinking contest, a close encounter with a robotic cat, and a high-speed car chase—this might be more adventure than the tiny duo bargained for!