What they do know about their powers is that they are caused by a relatively rare, anomalous gene. Someone with this gene can be either a Level 1, 2, or 3 anomaly. Level 3 anomalies can go through their entire lives and never be affected by the gene.
Level 2 anomalies can subconsciously use their powers throughout their lives. They have no control over this power at all. However, it is possible for a Level 2 to become a Level 1.
Level 1 anomalies know they have their powers and so can control them.
Since the triggering of their own powers, they have also triggered the powers of their siblings, Taylor's ex-girlfriend Rachel, and two brothers from Boston named James and Blake. They have met up with a girl from Australia named Jo, who's powers were already triggered, as well as a magic troop from England called The Mystics, made up of Doug Connory and his two kids, Nate and Carla, who is currently dating Isaac.
Previously they were in an accident involving a tour bus and a very big truck. The shock of the incident pushed Taylor's mind into the probe he had been playing around with at the time. If that wasn't bad enough, his mind became somehow attached to a rock on the side of the road and he cannot move beyond his telepathic range from this rock. He is now trying to find his family and his body.