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.

Ivanhoe is learning his way while having dealing with his father, Sir Cedric. The Normans are threatening England so he must quickly develop under the tutelage of the Black Knight, secretly King Richard, and followers of Robin Hood.

In order to combat the damage caused by the depletion of the ozone layer, maverick biologist Hank Symes unleashes his most ambitious experiment to date: accelerated evolution. Unfortunately, this not only causes the authorities to take notice, but also creates a backlash from his new neighbors—leaving his son caught in the middle.