Five high school friends are bonded by an oath to protect one another no matter what.

Then, on a camping trip in the middle of the forest, they find something extraordinary: a mysterious staircase to nowhere.

One friend walks up--and never comes back down. Then the staircase disappears.

Twenty years later, the staircase has reappeared. Now the group returns to find the lost boy--and what lies beyond the staircase in the woods. . . .