On their first birthday, they learned to walk. On their fifth, they planted seeds in handmade pots. On their tenth, they learned there are some words you can never take back. Amanda's eleventh irthday should be a happy occasion. Instead she's dressed in an itchy costume her mother picked out for her boring Hollywood-themed party. Meanwhile, across town, her ex-best friend Leo is celebrating their joint birthday with a huge bash including a hypnotist, a football star, a gian iguana, and a rock band. SO not fair! Amanda can't wait for the day AFTER her birthday so she can stop thinking about the fight that led her and Leo to have separate parties for the first time in their lives. There's just one problem. The next day is her birthday all over again.