When Ultra tries to probe Stephen's brain, he looks to his fellow Tomorrow People for help, but is rebuffed by an angry John, leaving Cara to go behind John's back to help Stephen. Meanwhile, Ultra tracks down the identity of a new break-out, who has been using his powers to commit crimes. Stephen tracks down the new break-out, but is shocked when an Ultra swat team is called in. At a loss for what to do, Stephen calls on John, Cara and Russell for help, leaving them with a risk of also getting caught. Upon learning of Ultra's evil motives, John tries to convince Stephen to spy on Ultra to help save other potential Tomorrow People, while still pursuing the answers he seeks about this father.

Stephen reluctantly attends a party with Astrid, but is startled when he hears that one of his classmates is in peril. Desperate to help, Stephen turns to John and Cara, but they make it clear that they do not help humans. Stephen secretly tries to enlist Cara’s help, which brings up her own feelings about her traumatic past. Meanwhile, John gives Stephen a mission to infiltrate Ultra’s main computer to help give them an advantage in finding new break-outs.

When Ultra's most wanted, Killian McCrane, resurfaces after years of being in hiding, Stephen enlists John's help in tracking him down. John reluctantly agrees to help, but changes his mind when he learns that Killian isn't after Jedikiah as everyone suspects. Stephen, wants to help, but Cara explains that John's history with Killian, which brings back a flood of memories from John's past, making him do something he never thought he would do again. Meanwhile, Stephen's mom is suspicious of his whereabouts, putting him in an awkward position.

After Stephen breaks Ultra protocol during a training exercise, Jedikiah’s mysterious boss insists on meeting Stephen. Stephen grows concerned when he learns Jedikiah is unable to protect him, so he turns to John, who is only interested for selfish reasons. Elsewhere, the Tomorrow People are desperate to go topside to a party like normal people, but John and Cara disagree on the dangerous plan. Meanwhile, Stephen makes a plan to go to Homecoming with Astrid, but when he bails on her once again, she decides to find out what he is really up too.

When Stephen and Russell head out for a night of fun, they run into a potential new break-out. Stephen and Russell report back to John and Cara about the new person, but they want to keep a low profile from Ultra. Sadly, Russell learns that his dad has passed away and he is torn about whether or not he should go home. John volunteers to accompany Russell to help keep him out of trouble. Meanwhile, Jedikiah has a shocking secret that could destroy his career.

When Stephen decides to have some fun with his newfound powers, Jedikiah takes extreme measures to make sure it doesn’t happen again. After John and Russell return from their trip, John feels a strange tension between himself and Cara. Stephen tries to handle a new and dangerous breakout on his own, but finds himself in over his head and needing help from his fellow Tomorrow People.

Stephen is determined to uncover what he hopes is the key to finding his father, and crafts a plan with the Tomorrow People that involves getting inside Jedikiah's head. Meanwhile, Cara and Russell encounter an uninvited visitor in the subway tunnel base. Stephen takes a risky opportunity and snoops around Ultra.

When John finds himself in a dangerous situation, Stephen is unable to help without revealing himself to Ultra. Not satisfied with the answer he has discovered about his father's disappearance, Stephen decides to take drastic measures with the help of his fellow Tomorrow People to find out the truth. Meanwhile, Cara and Russell negotiate a trade with Jedikiah, which ultimately makes Jedikiah take a big risk.

After Stephen returns from the brink, he thinks he has a clue to what happened to his father, but his fellow Tomorrow People are not sure they believe him. When the Tomorrow People learn some disappointing news from John, they make an unexpected decision about their future. The Tomorrow People finally get a lead on Ultra’s secret research lab and they devise a dangerous plan to free all those being held captive there. Meanwhile, Stephen’s mom introduces Stephen and his brother Luca to a new man she is dating, but Stephen is having a hard time getting a read on him.