Cam and Eric s class is going on a field trip to the zoo. But Eric can t find his permission slip and without it he can t go on the field trip. Where did it go? Did he drop it somewhere? Was it stolen? Will Cam Jansen s amazing memory help to find Eric s permission slip in time? Or will he have to sit in the principal s office all day while the other children go to the zoo? Hurry Cam time s running out!