Genius hacker Connor discovers Cicada 3301, an online treasure hunt that could be a recruiting tool for a secret society. Soon Conner, art-expert friend Avi, and secretive librarian Gwen are dashing from graffiti sites to ancient libraries to uncover real-world clues. But they must outrun aggressive NSA agents, also hot on the trail of Cicada, who want the glory for themselves.

Struggling to conceive, a couple in their 40s are almost out of options -- until a sliver of hope arrives in the form of their visiting step-niece.