The Doctor and Sarah have been sent to investigate a research facility called Vegpro. While escorted by Mr Sillett, they discover the factory can make a plant called Sarricoid grow in less than an hour. After their visit, The Doctor and Sarah go to the nearest village knowing that the workers for the factory have to be locals. In a pub they meet a man called Joe Higgins, who tells them strange things have happened at the factory, one of them being Frank Lampard’s Accident.
The Doctor, Sarah and Joe set off to Frank’s house, not knowing that the pub owner has contacted Mr Sillett about where the Doctors going. Once arriving at the house, Mrs Lampard explains he just sits in his chair, never standing up. Frank’s accident had left him with scares on his arm, Mrs Lampard was told he doesn’t need to see a Doctor by the factory. But after an examination by the Doctor himself, he knows it’s far more serious. He and Sarah set off in Bessie, only to be chased by Mr Sillett’s henchmen. They manage to lose them on foot and head back to the factory knowing it’s the last place anyone would expect them to go.
Once braking in, the Doctor and Sarah put on protective suits disguising themselves as workers. They enter the Sarricoid room, when suddenly the plants come alive. Without warning the Sarricoids start to bombard the Doctor and Sarah with seeds. The Doctor manages to pull Sarah out of the room and decontaminates them both. The Doctor is surprised to see the Seeds dissolving when it is hit by cold water, meaning the seeds are acid based. The Doctor and Sarah head out into the corridors only to be confronted by Mr Sillett with a revolver.
He says he’s taking them to his master Professor Sarric, The Doctor tries to explain that Professor Sarric has far more evil intentions than he knows about. But Mr Sillett does not believe him, so in one quick move The Doctor knocks him out. They need to escape the factory to get help. So the Doctor uses a forklift truck to knock down the electric fence. Knowing his guards are useless, Professor Sarric uses Lampard by mind control to seek out the Doctor. While walking through the woods, Sarah trips over a rock spraining her ankle. Suddenly they see Lampard heading their way. The Doctor tells Sarah to keep down while he leads Lampard away from her.
Soon he returns saying he gave Lampard the slip at a stream. Back at the factory, Mr Sillett has climbed up the building to see into Professor Sarric’s room. He is stunned to see plant tentacles weaved around Sarric’s face. Unknown to Sillett, Sarric has a special spy detector. Looking at his monitors, Sarric sees Sillett climbing down to the ground. Sillett escapes the factory in his car. The Doctor and Sarah enter the house of Mrs Lampard, who takes them to the vicar and explains the situation. The Doctor rings the Minister of Defence explaining they need help. Near by the Vicar’s house, Sillett sees Lamapard standing in the middle of the road. Sillett rams Lampard. Sillett is knocked unconscious and the Doctor, Sarah, Mrs Lamaprd and the Vicar have gone outside to see what’s going on.
The Doctor picks up Sillett, but they are all horrified to see Lampard getting back up. They all run into the church but Lampard brakes through the widow so they head up to the top of the tower. Amazingly Lampard begins to grow in size and will crush the tower. Suddenly helicopters come and begin to spray water on Lampard killing him.
So with the help of the Fire brigade they destroy all the Sarricoid and destroy Professor Sarric.
Reprinted in Doctor Who Classic Comics #5-6Time placement: Sarah mentions she hasn't got used to the Doctor's new face yet. Meaning he's only just regenerated.
