Once again Abby and her brother Jonah go through the magic mirror in their basement, and this time they find themselves interfering in the Little Mermaid story--and needing to set things right and make sure everyone has a happy ending.

When the magic mirror sends Abby and Jonah into the story of The Twelve Dancing Princesses to retrieve the crown ruby from the Kingdom of Douze, they follow the twelve sisters to the underground Dance Resistance Party where Abby learns she is not really a terrible dancer.

In this third adventure, Abby, her brother Jonah, and her friend Robin get sucked into the magic mirror and end up in the story of Sleeping Beauty, but when Robin pricks her finger and uses up the sleeping spell, Abby has to come up with a clever solution and a new happily-ever-after.

Abby's first problem is that Jonah has lost all his memories of the magic mirror and their adventures, so when they get sucked through into Beauty and the Beast, he is unaware of the danger, and picks one of the Beast's roses--her second problem is locating Beauty and performing a match-making miracle in order to recover her brother, and still make it back to the real world before their parents miss them.

Abby and Jonah take a trip through the magic mirror and finally end up in Jack and the beanstalk (which happens to be Jonah's favorite story ever)--but things soon start to go wrong, and the children have to try and set the tale right, even if it means trading their dog, Prince, for the magic beans, climbing the beanstalk (three times!), and reaching an amicable settlement with the giants (Magnus and Philippa, who are really quite nice), and the sneaky...

After moving to a new house, ten-year-old Abby and her younger brother Jonah discover an antique mirror that transports them into the Snow White fairy tale.