A bicycle race running through Somerville promises to relieve the summer doldrums at Mick's Diner for brother and sister Rowan and Astrid, and their friends Quinn, and Jace--but when two of the "sponsors" show up, the four children are suspicious, and quickly come to the conclusion that these two adults are up to no good.

"After a failed engagement and her mother's battle with cancer, Charlotte Carter's life is finally turning around now that she's landed a dream job teaching music. What she didn't see coming was the imminent closure of the school's music program. She's determined to save it, even if it means getting creative. There's no way she's chalking this up as just another failure in her book of recent embarrassments. Zach Bryant is back in town just long enough...