Reka Thorn is a 13 year old boy who resides in a research camp together with his father who is a huntsman, tasked with protecting the scientists from the Grimm. Reka is someone with no aura, which makes it impossible for him to ever achieve a semblance. When Reka was a toddler his mom died protecting the scientists to a mysterious Grimm never seen before.

As one day a Grimm attack happened at the camp, which made him force to escape towards City of Vale together with his 2 friends, but on there way there a lot of strange events happen.

This story takes place mid way Vol.3 of RWBY so I would advice to start reading this after you have at least seen Vol.1 till 3.