Maria, Ariana, Jade, & Ben have spent every summer together at Horseshoe Lake since they were children. Secrets and bonds, first kisses and heartbreak…everything happened there. But time has a way of complicating things. Now the four are in college, so when Ben & Jade embark on a secret relationship, and Ariana betrays Maria in the worst way possible, the schisms in the group become chasms. Their last hope to come together—and save the lake—comes in the form of an old-fashioned treasure hunt.