Charlie, Jeffrey and Sidney are all in the seventh grade and all are spending too much time in the principal's office. Charlie talks nonstop, Jeffrey is too frightened to talk at all and Sidney would much rather let his fists hold up his end of the conversation. One day all three end up before Mr. Duncan, or Frog Face, as they call him behind his back. Finally realizing that detention is not solving the continued problems, Mr. Duncan decides that what these troublemakers need is some discipline and order, and consigns them to a series of lessons in karate run by his son Willie. What begins as a penance slowly becomes bearable and then a pleasure for the three boys, as they all begin to learn something about themselves and how to get along with others.

Charlie has a bag full of videos he lifted from his dad's closet. Sidney's on the run from two guys in a pick-up truck. Grandpa Anderson wants to eat something other than potatoes. And Jeffrey just wants a little peace and quiet.These are the Bachelors. Three boys and a grumpy grandfather living together for five days while Jeffrey's mother takes his grandma to the hospital. Throw in a few unexpected—and uninvited—visitors and the kids from karate class have another adventure on their hands.They also have a job to do. Grandpa Anderson might be old and a wee bit crusty, but he's also lonely, scared and not exactly a picture of health himself. It is their job to take care of him, and, with a style that is uniquely their own, they do.The Bachelors continues the story of the three small-town misfits introduced in Frog Face and the Three Boys and One Missing Finger. After learning how to cope with conflict and then young love, Charlie, Sidney and Jeffrey are now learning about self-sufficiency and responsibility.