Amy is a teenage girl who loves shopping and thinks Farrah is the coolest girl in school, but she does not have a lot of money. In her dreams, Amy has won a multi-million dollar shopping spree. Nilus tags along hoping to find a hat for Pearl, his talking clam friend. Amy buys tons of things but it is not enough. All that's left to buy is the mall! But Amy starts turning into a rat (a ""mall"" rat) and is faced with the dilemma of what to buy next. Can Nilus help Amy with her problems and still find a clue to the whereabouts of the Dream Dust Hourglass?