September Mourning has no past that she can remember, only a strange and shadowy present filled with the voices of the dead. Turned into a unique hybrid by the former Reaper of the lonely, injured, and abused, September Mourning is the only human/reaper to exist. Tasked with reaping the souls of the "worthless" by her mysterious tattoo, September hides and protects them until she can help them realize the last thing they had left undone in life. Whether it's aiding souls to expose abusers, find lost loves, or settle old debts, in each case September is guided by voice of the Skullfly, which only she can hear.