The Tomorrow People have discovered a new Tomorrow Person breaking-out. Using triangulation they trace Stephen to the hospital where he has been taken, and Carol makes contact. She teaches him how to control his telepathy, but before she can finish they are attacked and Stephen is kidnapped by Ginge and Lefty on the orders of Jedikiah.

The John, Carol and Kenny mount a rescue operation and release Stephen. When Stephen is left alone in the Lab, he deactivates Tim's external connections and opens the door to allow Jedikiah, Ginge and Lefty into the Lab.

Carol realises that Tim has stopped working and contacts John. They both go to the Lab, but decide to jaunt nearby and walk to the entrance. They walk into a trap set by Jedikiah and are stranded in Hyperspace. Kenny jaunts to the Lab while Jedikiah and Ginge are outside, and shuts the door. He then re-activates Tim's external connections. Jedikiah starts to burn through the lock of the door, so Kenny tries to stop them and is captured. Tim locates Carol and John in Hyperspace and jaunts them back. Jedikiah breaks through the door and paralyses all the Tomorrow People.n

Jedikiah leaves all of the Tomorrow People except Kenny, who he takes back to his base. Kenny, Ginge and Lefty are put into a room that matter transports them to a spaceship. Carol, John and Stephen search Jedikiah's base, but find nothing. They escape just before it explodes. Jedikiah reveals that he is a shape-changing android. The Cyclops contacts the Tomorrow People telling them to go to his spaceship, if they want Kenny back.

Carol, John and Stephen want to go to the spaceship, but Tim stops Carol going. John and Stephen jaunt into a trap and can not leave. Carol jaunts to a different part of the ship, Jedikiah finds her and she damages him with a stun gun, the ship is also damaged, releasing John and Stephen. They then find Kenny, Ginge and Lefty and release them. They search the ship and find the Cyclops. He explains that he is only trying to go home as his crew has been killed and he needs telepaths to pilot the ship. They jaunt the Cyclops home, and all escape back to Earth before the ship explodes. Jedikiah is seen floating in space...

A spaceship finds Jedikiah floating in space are retrieves him, Rabowski repairs him. Stephen is trying to develop a photograph of something he saw in Hyperspace, but it came out blank. Carol and Stephen jaunt into Hyperspace to look for anything unusual. Jedikiah tricks Peter (a telepath from Earth's future) into operating Rabowski's Time Key to take them back to the 20th Century to the Tower of London. When Carol and Stephen jaunt back to the Lab everyone is frozen.

Carol and Stephen find Jedikiah, Rabowski and Peter at the Tower of London. They kidnap Carol and return to their own time. Everyone then comes back to life. Peter refuses to operate the Time Key again, so they put Carol into the airlock and start pumping the air out.

Peter agrees to help and they let Carol out of the airlock. Peter has to work on the Time Key and Jedikiah allows him to use his telekinetic abilities, at the same time Peter manages to contact the Tomorrow People and tell them where they are. John and Stephen jaunt into Hyperspace to look for the spaceship. Rabowski, Copin and the Medusa use the Time Key to go to the underground tunnels near the Lab. Rabowski capture Ginge, Ginge manages to push the Medusa onto the electrified rail lines and kills it. Ginge is then taken back to the spaceship. John and Stephen come back from Hyperspace, and then return to it and find the spaceship. Jedikiah uses the ships laser and shoots at John and Stephen.

Tim jaunts John and Stephen back to the Lab. Tim and Kenny use an experimental technique to bring them back to life. Jedikiah turns against Rabowski and in a struggle the Time Key is damaged. Rabowski runs to where Carol, Peter and Ginge are locked up. Jedikiah turns the air and heat off. John and Stephen wake up, but they and Kenny are very weak, so they have to sleep. Jedikiah turns the air and heat back on, locks up Rabowski and takes Peter to repair the Time Key, Peter booby traps the Time Key. Peter steals the key and lets them all out of the cages. They all use the lift to the Time Key area, but Jedikiah stops the lift. Peter uses an inspection hatch to escape, but Jedikiah catches him, and re-starts the lift. There is a fight and Jedikiah and Rabowski are transported by the Time Key to the surface of Mercury. Peter then uses the Time Key to return everyone to their right times.

The Tomorrow People are worried by a dramatic increase in natural disasters. Ginge and Lefty go on holiday the Clacton. Ginge meets Joy, and is being watched by a mysterious man. Ginge is kidnapped by Joy and the Spidron using a matter transporter, and is brain-washed into working for Spidron.

Lefty is worried about Ginge, so Stephen goes with Lefty to Clacton Pier. Stephen and Lefty find the matter transporter in the Haunted House, but they are discovered. Lefty gets away, but Stephen goes back to investigate and is captured by Joy and thrown into the sea. The mysterious man rescues Stephen from the sea and teleports in front of John and Carol.

Carol and John find Stephen back at the Lab, unharmed, but Stephen, Kenny and Tim do not remember how Stephen got back. The mysterious man reveals himself to be Steen, a Galactic Policeman, who is chasing Spidron. Spidron has been raiding planets for Magnamite, a rare substance that holds planets together. Steen, Carol, John and Stephen use the matter transporter to go to Spidron's base. Spidron releases all his captives from mind control causing panic, and opens the lava ducts to flood the base.

Ginge breaks free and closes the lava ducts. Steen, Carol, John and Stephen find the Spidron's control room as Spidron and Joy leave. The natural disasters continue to get worse. Joy goes to Spidron's hideout near his spaceship, as they are preparing to leave. Everyone goes to try to find Spidron's spaceship. They find a sewer entrance, Ginge and Lefty try to stop them as the Spidron has them under mind control, but the control is weak and is broken. The Spidron escapes into his spaceship, but Joy can not join him. Steen arrests Joy, but will not take her off the planet Joy told Steen that she had double crossed Spidron by keeping the Magnamite on Earth in the mining areas. When the lava reached to storage areas the Magnamite flowed back into the Earth's crust stabilising it.