Full-time RVers, Rip and Rapella Ripple, are headed to Rockdale, Missouri, in their old travel trailer (aka The Chartreuse Caboose) to attend a friend's surprise birthday party. But surprise quickly turns to shock when a party guest is found murdered and Lexie Starr, a friend of the Ripples, is hauled off to jail as suspect number one.
Determined to exonerate Lexie, the Ripples put the Chartreuse Caboose in park and their investigating tactics in drive. But more than a simple frame-up is afoot when the victim's stepfather, who is also the local Police Chief, ignores the Ripple's...