Ruth Rose, Josh, and Dink attend a concert during which someone steals the star's diamond pendant, and they are soon on the trail of the thief.

Life is usually easy for popular fifth grader Hart Evans, but when his music teacher puts him in charge of the holiday concert, Hart must use all of his leadership skills to unite the other students.

"Here's Dan, Beep! Beep! The taxi man going to the show and picking up the band"--Publisher description.