A group of young men and women are chosen by the great Timekeeper and branded as Excelots, beings with cosmic energy who have been given freedom to travel through time and space as the Timekeeper's agents, exercising his will on all sentient life. But when the young female Excelot Emilia Astare realizes that controlling people's fate is wrong, she turns on the Timekeeper and those who do his bidding, causing an unbalance that affects not only her and her timeline, but the entire universe's as well.