Nanny Nantucket is the star of this tale. Emilia, her ward, has grown into a fine young lady and it's time for her to be married. So Nanny Nantucket must seek new work and finally settles out west in a little town called Crescent Valley. She falls in love with Dralock, a bounty hunter and Master of Keys, along the way. Above the town of Crescent Valley sits the mansion factory of Dr. Nightshade, a reclusive mad scientist type. What he's working on nobody knows until it's almost too late.