When your best friend gets erased from existence, and your mum thinks you’ve gone mad — just another day on Bannerman Road.
Short Synopsis
Maria wakes up one morning to find that Sarah Jane has vanished — not just from her life, but from reality itself. In her place is a woman named Andrea Yates, living in Sarah Jane’s house and claiming she’s always been there. With the help of Clyde, Maria uncovers a sinister deal with an interdimensional Trickster, a deadly meteorite on a collision course with Earth, and one gigantic cosmic mistake involving a pier, a fall, and a bad choice made decades ago.
Extended Storyline
It all begins with Maria Jackson having a very weird morning. Sarah Jane’s house — usually filled with alien gadgets and faint smugness — now belongs to someone named Andrea Yates, a woman who’s a little too chirpy for someone living in a house full of other people’s memories. No one remembers Sarah Jane at all — not Maria, not Luke, not Clyde, not even Mr. Smith, who’s been reduced to an inert wall feature. (Imagine being so erased that even your sentient computer ghosted you.)
Maria quickly realizes something is very wrong — especially when her dad doesn’t believe her. Even Clyde assumes she’s gone slightly round the bend. But she’s seen enough alien nonsense to trust her instincts, and she’s not buying this “Andrea Yates” story for a second.
Flashback time! Turns out, when Sarah Jane was thirteen, she and Andrea were best friends. During a day out at the seaside, Sarah Jane slipped from a pier and fell to her death — except she didn’t, because something interfered. The Trickster, a creepy, white-faced being with a grin that screams “I ruin timelines for fun,” offered Andrea a deal: shewould live instead of Sarah Jane. In return, the Trickster would claim Sarah Jane’s future — which, inconveniently, includes saving the Earth multiple times. Hence the current “meteorite hurtling toward the planet” situation.
Maria, naturally, stumbles right into the middle of it. With the help of a small alien creature called the Graske (basically a hyperactive gremlin in a waistcoat), she learns what really happened. The Trickster has trapped Sarah Jane in a parallel limbo world, leaving Andrea in her place. The deal was simple: Andrea lives, Sarah Jane dies — and the universe collapses under a fiery space rock.
Eventually, Maria confronts Andrea, showing her the truth of what she’s done. Andrea, devastated, realizes she’s been living a stolen life. In a genuinely touching moment (and a rare break from sarcasm), she sacrifices herself to restore Sarah Jane to existence, undoing the Trickster’s meddling. Sarah Jane is back, the meteorite conveniently misses Earth, and Maria once again proves that if the Doctor ever needs a replacement companion, she’s already got the résumé.
As everything resets, Sarah Jane thanks Maria — not that anyone else remembers a thing. But that’s life on Bannerman Road: one day you’re saving the world, the next you’re wondering why your milk’s gone sour.