Danny Dunn on a Desert Island

"I challenge you to a duel of desert islands!" Dr. Grimes cries, when Professor Bulfinch accuses him of not being practical. Grimes plans to go ashore on an uninhabited desert island, and the Professor on another. After a month they will see who has survived the best!

Danny and his best friend Joe soon get permission to join them, and the four take off in the scientists'' plane. But when they crash...