The distant world of Tresmir was colonized by humans who are now rebuilding from a catastrophic war in the past and who share the world with the Adayo species. Communication with earth no longer exists. In the nation of Alaflora, 11-year-old Alfón works as a slave with a few other boys in the king's personal zoo. His personal mission of revenge is to kill the king, his grandfather, a relationship known only to himself.