Sky has undergone a transformation and in the process has triggered a countdown that nobody is able to stop. Sarah Jane and Sky end up being trapped between the alien war fought by Metalkind and Fleshkind. Clyde and Rani attempt to prevent the biggest bang the world has ever seen.

Maria and Luke start their new school where they pal up with another boy, Clyde. However, two of the teachers and the class genius turn out to be Slitheens in human form. They are shapeless smelly invaders from another planet whose aim is to destroy the Earth by turning off the Sun with the aid of a machine which Luke inadvertently helps them to start. The three teenagers are chased around the school by the Slitheen family.

The kids escape from the Slitheen and meet up with Sarah Jane at her house. They discover that vinegar will kill the Slitheen so, armed with vinegar bottles, they return to the school and destroy the three adult Slitheen and their machine. Carl, who took on the form of the class brain-box, escapes via a teleport but Sarah Jane assumes that he is dead. Back home she accepts Clyde into the group but asks for him not to tell others about their experiences.

Clyde threatens Sarah but they manage to talk him out of it, which leads Sarah Jane to believe that Trueman's control on people can be repressed by persuading them to do something that they do not normally want to do. Meanwhile, using in his broadcast to the world, Martin Trueman takes over each star sign one by one, starting with Gemini - including Rani's mother. The world is in confusion as people are accepting the 'Ancient Lights'.

Sarah Jane (Elisabeth Sladen) and Maria (Yasmine Paige) investigate the mysterious disappearance of local boy Lance Metcalf, and soon discover that a number of children have gone missing across the country. Remarkably, the disappearances all occurred during freak storms and in cities that are home to a laser tag game called Combat 3000. As Sarah Jane and Maria delve deeper into the mystery, Luke (Tommy Knight) and Clyde (David Anthony) are off enjoying a game of Combat 30…

A fraudulent astrologer named Martin Trueman is hit by an extraterrestrial body and begins to impress everyone with his uncanny predictions. However, what he predicts for Sarah Jane is far from pleasant...

Unknown forces bring to life Leonardo Da Vinci's most famous painting, and Clyde's day becomes a nightmare when a school trip descends into disaster. Trapped and without Sarah Jane's help the gang must find a way to battle the awesome abomination.

As Luke and Rani investigate the myth of the dreaded abomination, Mona Lisa vows to free her horrifying brother from his prison, but everything now depends upon Clyde to stop the terror.

Sarah Jane discovers an abandoned baby girl on her doorstep and attempts to find out who left her there. At a local nuclear power station, a beautiful woman appears out of nowhere and uses alien powers to take control of the place.

A Carcaroth has arrived on Earth, seeking soldiers to help fight his endless intergalactic war back home. Using Combat 3000 to sift out the best, most aggressive and instinctive fighters, he then transports them to his spaceship – awaiting transfer to the war. Clyde (David Anthony) and Luke (Tommy Knight) find themselves amongst the 'warriors', while Sarah Jane (Elisabeth Sladen) and Maria (Yasmine Paige) must infiltrate the alien's headquarters to bring down the Carcaroth from the inside.

Sarah Jane and the gang discover the secret of Erasmus Darkening - but are they too late?

The Blathereen, arch-rivals of the family Slitheen arrive on Earth. In a move that surprises the gang they declare peace between Earth and Raxicoricofallapatorius and they offer Sarah Jane a gift, one that might change the future of the human race forever.

When an old enemy, Androvax the Veil, returns to Earth asking for help, the gang face a dilemma – should they trust him? Or does the legendary Vault hold an even greater terror? But a second threat arises, when android guardians threaten to destroy anyone who uncovers their secrets. As the battle between Sarah Jane, Androvax and the androids reaches its climax, Rani has to save her own mother from being caught in the crossfire. But as the Vault opens the destiny of the entire Veil species is at stake. Is it too late to save them?

Sarah Jane faces the battle of her life to save her son from the effects of the gift of the Blathereen. Meanwhile trapped in the school, Rani, Clyde and K-9 fight to find a way to get to the attic, where the final showdown will take place.

Androvax the Veil returns to Earth and asks for the gangs help, but how can they trust him? Or is the threat posed by the Vault of Secrets great enough to overcome old enmities. And when the android guardians threaten destruction, is there really any other choice?

Sarah Jane (Elisabeth Sladen) and her young friends investigate reports of a ghostly nun which is haunting the local old folks' residential home. And when one of the elderly residents entrusts Luke (Tommy Knight) with a mysterious alien talisman, it becomes clear there is even more to the story than meets the eye. The gang delves deeper, and discovers that the nun is part of a secret order sworn to protect a terrifying alien creature who can turn her victims to stone with a single look.

Everyone wants the brand-new SerfBoard - and why not? What could be so dangerous about a computer?

Maria's dad Alan (Joseph Millson) has been turned to stone. The alien talisman is now in the possession of the Gorgon and her evil nuns, and they are preparing to open the portal to their world. Can Sarah Jane (Elisabeth Sladen) and her young friends free Alan from his stony state, prevent the nuns from unleashing more deadly aliens on the Earth, and avoid the Gorgon's petrifying gaze?

A lone surviving Sontaran from the failed conversion of Planet Earth wants revenge for the deaths of his comrades.

Trouble is brewing at Spellman's Magical Museum of the Circus when a group of people join hands and block the entrance the the museum... but they let Sarah Jane in, what is this mystery all about?

Trouble is brewing at Spellman's Magical Museum of the Circus when a group of people join hands and block the entrance the the museum... but they let Sarah Jane in, what is this mystery all about?

With Clyde's father Paul possessed by the alien pendant, he takes Clyde off for some fun. With a little help from some old friends, Rani and Luke try and track them down, leading to a waterside confrontation with the Berserker

Luke, Clyde and Rani must fight their most fearsome enemy yet - Sarah Jane Smith.

A haunted house, with mysterious whispers and secrets in the shadows - time for Sarah Jane Smith!

A lone surviving Sontaran from the failed conversion of Planet Earth wants revenge for the deaths of his comrades.