Mystics revere LORD BLUE as one of their own, a charismatic caterpillar who made the treacherous journey to the mountaintop and returned to teach them of the wonders of the kingdom. After being executed for his rebellious teachings, Mystics believe LORD BLUE transformed into a glorious butterfly and ascended to the mountaintop to be with the Father. Although still practiced by a few of the elders, most Muir caterpillars have long since abandoned their beliefs and lost faith in the very existence of the Butterfly.

A young caterpillar named Jim, however, refuses to give up his belief in the Butterfly and embarks on a pilgrimage to the mountaintop to find LORD BLUE and bring him back to Muir so that all of the caterpillars can believe in the miracle of the Butterfly once more.