It was created by Tim O'Mara, directed by Paul Wroblewski and produced by Andy Rowley, with executive production by Richard Langridge for Wark Clements and Claire Mundell for CBBC Scotland.

The eight teenagers, their teacher, and a park ranger, Melissa Williams, stay in tents, with monitoring equipment set up around the area.

With the mysterious events seemingly solved and Melissa standing guard over the smugglers until the police arrive, the teenagers and Gerry return to the ridge awaiting the rescue helicopters, only to be abducted by the aliens they had come to find.

While David and Sarah stay in Scotland, the rest of the group return to Australia via the same time travel portal they arrived at.

They realise that they must try to contact the aliens so that everything can be returned to normal, but they soon discover that they are suffering from a condition they name the "red-eye virus" – when an individual is stressed or fears for their life, their left eye glows red and they appear to "split", as if they are two separate people for a number of seconds, before vanishing.

Leon is the first to suffer this fate, shortly followed by a panicked Shona, and Chrissie, whose rescue of Lucy from a passing truck puts her in fear of her life.

They inform them that they are an ancient branch of the human race that evolved millions of years ago, before leaving the planet to avoid an asteroid, and that all of their species are twins.

The red-eye virus was an unintended side-effect of being taken aboard their space craft, likely due to the solar flare activity from the eclipse, and that there is no known cure.