It all started when an excess of radioactive material had leaked into the earth's core, causing the emergence of new plants, chemicals, and resources across the planet. Since then, the world has been plagued with acidic hurricanes, fireball showers, blood-burning bacteria, and a multitude of other bizarre environmental disasters and diseases. To cope with the dangers of the new environment and emerging diseases, a mysterious scientist named Dr. Z genetically engineered surviving animals into powerful beasts known as genopets. These beasts were created with the powers to regulate the environmental changes and cure some of the deadliest diseases. Political turmoil over Dr. Z's creation of the genopets eventually caused the remaining human survivors to be segregated into clans based on race, with each clan responsible for training a specific species of genopets to regulate the conditions across specific parts of the world. Unfortunately, such conditions are not ideal for 18-year-old Nira Dharni and her boyfriend, Taren Tasmin. The two of them have been in a happy relationship for five years, but now, every human and genopet in their clan has been slaughtered by the ruthless Firefang Clan. While Nira is adopted by a new clan, Taren is forced to join the Firefang Clan and aid them in their plot to dominate the other clans, including Nira's. Thus, Nira's love for Taren and their desire to continue seeing each other, despite their segregation into separate clans, will put their relationship, their genopets, and the entire societal structure of genopet clans at stake.