Rosie is a summoner who specialises in skeleton monsters. Why? She just thinks they're neat. Happy-go-lucky and insensitive to offence, Rosie is the polar opposite of her irritable adventuring partner Aisha. Unfortunately she's not organised enough to be their link to society so Aisha has to do the managerial side of the work despite hating every contact they have. Rosie spends the time playing with her favourite monster, Big Dog.