Both the wizard and his female assistant were actually dragons disguised as humans.
The store Dragons R Us was actually a store that was run by the 2 dragons that served dragons not humans.
There wasa store wide spell to ' fix ' any humans who purchased something
into dragons themselves
which meant the wizard dragons intended customer
Jasper
didn't buy anything
whilst his human girlfriend Shelley
became the human who the
dragon transformation spell
got to work on
The change was slight at first as
Shelleys clothes began to tighten on her
slowly changing body.
As she exitted the Dragons R Us store and headed back into the Mall
Shelley realized she was beginning to get awfully hungry
and dragged Jasper in the direction of the Malls Food Court
Where of course another dragon diguised as a human awaited Shelley with his All You Can Eat Dragon Burgers
At first Shelleys human common sense and her sense that something was off kept her from eating as much as she felt she needed to and the dragon burger owner could see that her human boyfriend was sending Shelley looks of concern that weren't helping matters any.
So another dragon in disguise as a Mall cop came along and detained Jasper on the matter of some shoplifting.
The food plates then started arriving in front ravenous Shelley liberally sprinkled with dragons blood and fiery hot spices.
Shelley dug in and the observing dragons took bets on how long it would take for her main dragon transformation to kick in.