Night-time is a deadly place to play in now that the evil Swagman lurks in its shadows. Zack and Hannah must hazard it in order to rescue the Dreamfly and her eleven strong Dreamflight from the grip of the Swagman and his Night Terrors. The action starts in the children's house but it's not long before they must cross over into the Swagman's Dreamworld. Things are far from normal here and accordingly, the twins transform into Dreambeasts with special abilities.