Kat has always been able to depend on her best friend, Mouse, but when Mouse develops a crush on the new art teacher, a misunderstanding threatens the girls' friendship and throws them into a mystery surrounding the disappearanceof a priceless painting.
As Dover Academy prepares for the Snow Ball, the annual holiday dance, Kat is forced to tutor Chloe in science so she can buy a dress for the ball, setting the stage for a new friendship or a big disaster.