Instead of spending a carefree summer exploring downtown Boston with best friend Ollie, thirteen-year-old Moxie must solve a famous art heist in order to protect those she loves from her ailing grandfather's gangster past. Includes facts about the 1990 Gardner Museum art theft.

While spending two weeks at Wilderness Camp on the Boston Harbor Islands, thirteen-year-old Ollie, short, half Vietnamese, asthmatic, and overweight, must find and protect hidden pirate treasure from those who would steal it for themselves.