Stephen and his fellow Ultra trainees are given a test by Jedikiah to see who is worthy of becoming an Ultra agent, but not everyone is happy to work as a team. Cara is faced with a mysterious visitor from her past. Russell is sent on a dangerous recon mission that could force a clash between Tomorrow People groups. Meanwhile, John works with a new break-out.

Julian is back and angrier than ever, but when he gets caught by Ultra he is forced to strike a deal that could cost his and Stephen’s lives. John once again disobeys Cara’s orders when he learns the Julian has discovered the location of the Tomorrow People’s lair. Meanwhile, Astrid is plagued by nightmares after her near-death experience and turns to her new friend John for some comfort.