In 1997, 11-year-old Jesse finds a mysterious staircase in the woods and disappears - - 20 years later, a group of hikers sets off into the very same woods. Unfortunately for them, they come face-to-face with the very same set of stairs...

Three years after the zombie virus has gutted the country, a team of everyday heroes must transport the only known survivor of the plague from New York to California, where the last functioning viral lab waits for his blood.