The unwritten series is about a futuristic Onigiri robot named Kengo, who travels to another dimension in the future to aid the ghost of a schoolboy, Ken Chan! The majority of the spooky unwritten adventures are comedic enterprises with lessons that include virtues such as honorableness, stamina, audacity, and respect for the planet. The most dynamic explorations include homeless ghosts, time machines, global warming, endangered animals, radiation pollution.