You can learn about this world as you play, but some basic insight is this is a normal world set in the year 2104, and fera is both singular and plural for the beasts of this world. Fera are abnormal creatures different from animals that can come in any size, shape, form, or color. They each also have their own abilities and powers. There are also people called hybrids that are half fera and half human, and they can switch forms at any time. Start your own story in this world and have fun.