"Are you a gifted child looking for opportunities?"
After these words appear in the local paper, Reynie Muldoon is intrigued. He shows up, along with dozens of other children, to take a series of strange tests. To determine what? He doesn't know. In the end, Reynie and three other children have passed the tests and are recruited by a mysterious man named Mr. Benedict to embark on a dangerous mission. They must infiltrate a secret school run by a very smart and very bad man, and stop him as he tries to take over the world. The four children name themselves The Mysterious Benedict Society, and their mission will challenge them both physically and mentally. Will the Society be able to stop the evil Mr. Curtain before it's too late?