(A BAKER BOYS ADVENTURE) Life on the "Hill" turns exciting when eleven year old Jake finds an old jar hidden in the cellar. The jar contains a paper that would propel him and his brother, Billy, into a summer full of fun, frustration, intrigue and discovery. A horse stall, an old cigar box, a rusty nail, and some spruce trees are all clues that lead to their final triumph. With help from their Uncle Dave, they slowly decipher the "Mystery on Macomber Hill."