Mia is about to turn 15 and can't wait to dance the night away with Michael at the biggest, most romantic event of her life so far: the senior prom! But nothing's going according to plan. Not only does Mia face a snoozefest summer of sceptre-wielding in Genovia, but, even worse, Michael hasn't even INVITED Mia to the prom at all. Hello? What is going on here? Just as Mia comes up with a perfect plan to change her man's mind, disaster strikes - a disaster that only a genius like Grandmere can overcome.