Margarita and Bindi have big plans for the Fourth of July, involving borrowed bicycles, a geocaching power trail, live podcasts, and plenty of fun. But their day quickly goes awry when they stumble upon what looks like a murder in progress.

Strange rivalries and secret alliances test Margarita’s puzzle-solving skills, and Bindi suffers a rather painful setback when she comes face to face with someone she never thought she’d see again.

The overly stoic sheriff can’t be in two places at once, so the girls need to figure out whodunit and rescue the next potential victim before the explosive finale.

What is Geocaching?

From Geocaching.com:

“Geocaching is a real-world, outdoor treasure hunting game using GPS-enabled devices. Participants navigate to a specific set of GPS coordinates and then attempt to find the geocache (container) hidden at that location.”