Before Charles Xavier and Erik Lensherr took the names Professor X and Magneto, they were two young men discovering their powers for the first time. Before they were arch-enemies, they were closest of friends, working together with other mutants (some familiar, some new), to stop the greatest threat the world has ever known.

In Los Angeles at the turn of the 1970s, drug-fueled detective Larry "Doc" Sportello investigates the disappearance of an ex-girlfriend.

Everyone always knew that Max had a wild imagination, but no one believed that his wildest creations -- a boy raised by watchful great white sharks and a girl with the force of a volcano -- were real. Now, these two pint-sized action masters will show Max that even an ordinary kid has what it takes to be extraordinary.

Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.