The Mennyms, a family of life-size rag dolls living in a house in England and pretending to be human, continue to fear that their secret will be discovered by the outside world.
Fifth-grader Frankie Stein must prove he has inherited the genius of his namesake, Baron Frankenstein, or his parents may turn him back into spare parts.
Three friends form a codebreaking service and meet a motley cast of characters including a Bulgarian spy, a man from the State Department, and a little old lady who wants her diary encoded.
Two boys in search of an original idea for a social studies project are inspired by a funny-looking stray mutt to make a movie promoting the local animal shelter.