Outlaws of Sherwood Forest

from the back of the book Robin Hood Needs Your Help! You are spending the summer at camp. One night you steal into the woods to find a lost arrow. Suddenly a cloud covers the moon - and you are magically transported to Sherwood Forest. You're standing face-to-face with a marksman dressed in all green. It's Robin Hood, and he needs your help! The sheriff of Nottingham has captured Maid Marian!