the story revolves around the age of 2499 where humans are evolving on the base of technologies, but the scientists are thinking about the next stage of human evolution and for that they started the program: V.I.X.I.N.U.S . To their surprise, they found that the medicine not only boosts their strength and capabilities but also cures a lot of fatal diseases , even a 3rd stage cancer in one night. the medicine starts getting around the world and within a week all the humans who were at the age group of 25-40 got this medicine in their body and later on this medicine was named as 'VEXXA' and considered as a vaccine for everyone when the reach 25. but those days didn't last long, after 2 months cases like the appearance of unidentified creatures causing destruction to public places and urban regions started spreading around the world and later on cases of missing people in large numbers started getting viral 7th june 2499. the first case of public appearance of those unidentified creatures in megashu has alerted the people that in order to create the medicine for evolution. We, the humans ended up getting the end of humanity 17th july 2499. survivors around the world group together to fight against those creatures but they ended up getting out numbered with no way of avoiding this epidemic they decided to leave the mainland and start living on the island group far away from this epidemic.