Travelling through the multi-universes, Gareth hunts for his infant son. He was taken by someone that Gareth trusted, Abby. She travelled back in time to prevent a future cataclysm, abducted the baby and took him through a mysterious, rainbow portal.

In his search, he finds new versions of lost friends who can help him in this quest, which will lead him to the strangest place he's ever experienced.

For amongst the multi-universes, there is a place unconnected to the other universes and with its own timeline, known as the Shadow World. There, waits the Abomination, a man who can perceive potential timelines and manipulate the worlds around him. He knows Gareth is coming for his son. He planned for this.

When he finally faces the Abomination, there is one question Gareth must answer: how much is he willing to sacrifice to get his son back?