The adventures of Rocketo Garrison take place in a mythical future 2,000 years after the world has been destroyed in a catastrophe. This compilation of the first six issues of The Journey to the Hidden Sea tells the story of Rocketo's idyllic childhood and his early training as an explorer and Mapper. After returning from the deadly Solarium War a broken man, Rocketo Garrison is swept away on a journey to the Hidden Sea, a fabled, dangerous land that may hold the key to undreamed of treasure as well as the truth about an ancient mystery.