Using a secret listening device, Jay overhears his Dad, Marshall, discussing him with two shadowy operatives from infamous Genetics Company EmbroGen.

Later that night, he packs a bag and then sneaks downstairs into Marshall's office and copies his computer files onto a memory stick.

He is intercepted in the corridor by Lomas who flashes a fake Police ID and tells him that Marshall has been involved in a car accident.

By the time the operatives arrive back at EmbroGen HQ to receive an ear-bashing from their boss, Salko, Jay is making good his escape on a bus.

As Marshall and Lorraine start to worry, Jay sneaks out of the wardrobe and begins to tidy Mel's extremely messy bedroom.

Whilst Lorraine, Marshall and Glenda are busy making a police appeal for the kids’ safe return, EmbroGen's powerful boss, Salko is closing the net.

As the two fugitives take refuge in a shed on an allotment, Jay tells Mel that they are being followed and that they must find the one person he can trust to help them – his Uncle Harry.

Jay is angry when he finds out what Mel has done, but when he takes the clothes back to the shop, the sales assistant refuses to refund his money unless he can show her the receipt.

Lomas is carrying an official looking badge and so Mel has no reason but to agree when she offers to take her to her grandma's to be reunited with her mum and her younger sister.

Now christened ‘M1’, Mel is led to a large room where she and the Jay clones are forced to undergo gruelling bio-metric tests to assess their intelligence.

But as Mel begins to fear that she may never be able to leave EmbroGen in one piece, Jay, with the aid of a video camera and a laptop, has managed to breach the lab's security and is already tip-toeing his way down the maze of underground corridors in search of her.

Realising that they only have a limited amount of time to get out of the EmbroGen building, Jay leads Mel on a dash down the corridors until they reach the storage room.

Still with Fleecey in the boot of their car, Boyer and Lomas set off in search of Mel and the clone they are sure helped her escape.

Jay comes to his senses when Uncle Harry refuses to follow Mel's suggestion that he should throw the memory stick into the fire and instead, puts it straight into his safe.

After they spend the night sleeping in a barn, Jay reveals to Mel that the memory stick he gave to Uncle Harry was a fake – he left the real one with Maggie!

Salko is furious when he hears that Uncle Harry has allowed Jay to slip through his fingers and orders Boyer and Lomas to locate him and remove him from the project...for good!

He is horrified when he discovers that EmbroGen have cloned his son, but while Jay is still on the run, he has no choice but to aid Salko in his plan to create a world full of perfect children.

But this poor mother is soon the victim of a terrifying conspiracy when she brings home a boy who looks and sounds like her son, but is in actually fact a clone – J2.

Fleecey panics and runs out of the shop, unaware that she is leading Boyer and his sidekick Lomas straight back to the cottage.

Now in possession of the memory stick with its precious contents, Boyer and Lomas close and lock the heavy iron lid that covers the well shaft.

Her new friend, Mel's mum Glenda, makes her a kind offer – she will take home and look after the other recent returnee, Jay, so that Lorraine can remain with Fleecey in hospital.

Marshall returns to work and proves whose side he's really on once and for all when he is given the opportunity to sabotage the computer system formulating the new clone project – Eden II.

But, after sharing a midnight feast under the dining room table with Mel's younger sister, Kelly, J2 realises that he enjoys living as part of a family.

As Marshall's attempt to sabotage the Eden II project is thwarted when a suspicious Lomas changes the computer authorisation code, Jay desperately tries to convince a tired Mel that they must return to EmbroGen to stop Salko's evil plan.

Just when all looks lost, Jay pulls Maggie's wallet out of his pocket and opens it, stunned when he finds a detailed map of the EmbroGen building.

After overhearing a conversation between Salko and Lomas, Jay is convinced that his father, Marshall, is doing EmbroGen's dirty work and decides to do all that he can to stop him.

After a late night talk with Glenda, J2 asks to be taken to the hospital where he offers to donate one of his own kidneys to save his ‘sister’ Fleecey.

Marshall emails a video transmission to the world's press, telling them to visit the EmbroGen website in an hour's time.

At the hospital, Lorraine and Glenda have already watched their children; Mel and Jay give an interview to the press outside the EmbroGen building on the television.

By the time Mel, Jay and Marshall arrive at the hospital for a happy reunion; Fleecey and J2 are both making a good recovery from their operations.