The time has come: Dean Curse and his two best friends will soon meet the other members of the society who share his gift of premonition. They're so excited to finally get a formal welcome that they don't even mind that the timing means they miss the opening day of the city's premier event: the annual Abbotsford air show. But what is supposed to be a relaxed meet-and-greet with his new team, quickly becomes a race against the clock. Dean, and every other member of the Abbotsford sector, are hit—at the same moment—by a particularly horrifying vision of death and members of the Congregatio de Sacrifico from divisions all over the country come to help. One thing is clear: they have 24 hours to stop what is sure to be the most catastrophic event the city has ever seen.

But as desperate seconds tick by, Dean, Colin and Lisa become more and more convinced the disaster is going to be caused by someone within their own new-found ranks. It's going to take every ounce of determination and bravery for Dean and his friends to find the answers before it's too late – but how do you stop someone who already knows the tricks of the society's trade?