Vincent Moore, professor of archeology at Mingo University, discover the location of a old Planetarium within the frozen landscape of Frigia. One that was rumored to have records of a mysterious, Mongo like planet that passes within rocket ship distance of Mongo every 25 years. These record could hold the key to isolating when the mysterious planet will be within orbit again and help the Freeman overthrow Ming once and for all. During the exploration of the planetarium, the explorers were attacked and the records of the mysterious planet stolen. On the assumption the records are on their way to Ming, the race is on to intercept them first.