Six teenagers from the Bronx, 3 blacks, a Chinese, an Italian, and a Puerto Rican, set out to explore a cave in their neighborhood. The cave exploration is a washout but after falling down a ledge, the six find that they have time-traveled three centuries into the future! Here, the Bronx is a heavily wooded forest, unexplored by a tribe of people living there. The teens rescued a boy from a tribe living in the Bronx and he took them to his people....

Rose confronts Jack to explain the cause of Amy's recent strange behavior. Amy's past - which she has worked so hard to suppress and deny - has come back to haunt her and the only way to protect Jack may hurt him the most. Meanwhile, Richard discovers a secret about Rose that could destroy her ascent onto The Nine. Shepherd himself is skating on thin ice as Madison continues to evade his grasp.

Jack returns home to find Amy sleeping soundly in bed. She has a logical explanation for her whereabouts in Seattle and professes her love to Jack only to ask for a separation the next day. Jack is terrified for Amy's mental state. Meanwhile, Gary calls with alarming news. Things get dangerous as Madison hitches a ride to Seattle, determined to evade capture. A deal from Richard's past continues to haunt him.

Jack desperately tries to find Amy in Seattle but her movements offer more questions than answers; Madison finds herself in a train station with a ticket to Seattle, an envelope of cash, and a mysterious key. An act of humanity has serious consequences for Richard.

A gruesome discovery buried in Jack's backyard incites him to make one last attempt to bring Amy home. Rose remains haunted by a tragedy from her distant past and abducts a lowly waiter whom she's certain will have answers. Gary has finally realized how to expose the corruption behind Qui Reverti, but it demands an unthinkable sacrifice.