The Seavers conspire to get even with Mike for continually conning Ben out of his milk money. Crucial to this scheme is a "magic" rock, initially purchased by gullible Ben. Jason, Maggie, and Carol manage to convince Mike that the rock has genuine magical powers, the result being that he buys it from Ben for ten times the money originally spent! But the joke goes too far when Mike depends upon the rock to help him deliver a "brilliant" schoolroom speech.
- Boner mentions going "where no man has gone before"; Andrew Koenig, was the son of Walter Koenig, who played Chekov on "Star Trek".