On the eve of her 13th birthday, all Jenna Rink wants is to be pretty and popular. After a humiliating experience with the coolest kids in school, Jenna makes a desperate wish for a new life. Miraculously her wish comes true, but with one catch... it's 17 years later and she's a 13-year-old trapped inside a 30-year-old's body. Jennifer Garner plays Jenna and Mark Ruffalo plays Garner's childhood friend and love interest. Judy Greer plays Lucy, Garner's best friend, Kathy Baker plays Garner's mother, Phil Reeves plays Garner's father, Andy Serkis portrays Garner's boss and Samuel Ball portrays Garner's boyfriend.