John, Liz and Stephen sense the breakout of a new Tomorrow Person, Tyso Boswell. Unknown to them, however, he has already come to the attention of Professor Cawston, who introduces him to the mysterious Colonel Masters.

Cawston agrees to help the Tomorrow People find Tyso by introducing Stephen to Masters; however, as soon as Masters takes Stephen away, John and Liz lose contact with him.

Masters is now aware of the Tomorrow People's existence and is determined to harness their powers. He tries to recruit Cawston to his cause, revealing the true fate of Stephen and Tyso.

TIM summons Chris to the lab where he is able to cure John. With the rest of their friends being held prisoner, Chris comes up with a novel way to thwart Masters' plans.

The Tomorrow People are visited by Timus, an ambassador from the Galactic Federation. He tells them of the planet Pyrie, where telepaths are oppressed by the servants of the alien Khultan, and asks them to go there to help them.

The Tomorrow People meet up with Tikno, the clone brother of Timus who is on Pyrie for the same reason as them. He takes John and Stephen to meet the local telepaths, the Vesh, to try and persuade them to join forces.

Liz, Tyso and Lenda have been captured by the Veshtakers and sentenced to burning. While Stephen and Arkron try to rescue them, John, Tikno and the Vesh infiltrate the Khultan's pyramid in an attempt to restore everyone's powers.

A group of aliens stop off on Earth for supplies, but since their only knowledge of Earth's culture comes from watching cowboy films, it is not long before their visit results in violence and the Tomorrow People become involved.

The Tomorrow People attempt to rescue Elmer from the police and return him to the ship, otherwise his family will destroy Earth in retaliation.

The Tomorrow People persuade the British authorities to turn Elmer over to them so they can return him to the ship, but unknown to them Emily has plans for John.

When one of his colleagues goes missing after an expedition to Egypt, Professor Cawston goes to the Tomorrow People for help. They soon realise the expedition unearthed Jedikiah, who is attempting to track them down.

Tricia takes Jedikiah to the EWE, where he kills Colonel Masters. As a result, the EWE start hunting for the Tomorrow People.

John and Liz are on life support at the EWE. Their only hope of recovery lies with Stephen and Tyso, but Cawston refuses to let the boys near them, afraid one of them might be the shape-shifting Jedikiah.