Implants are the future. Thanks to General Rox and his Implant Program, a new wave of soldiers have been born. However, despite all this new found power, Rox still yearns to finish a mission that has long eluded him, to kill the creature known as The Collector. As luck would have it, after disappearing for years, The Collector has returned. This time, the creature is looking for a deadly device that could tip the scale in its favor and aid it in its grandiose goals.
On the other side of the world, Fang Snow's daughter, Falena, is trying to find out the truth on her mother's fate. She's been searching far and wide and may have finally stumbled onto what she's been looking for. Yet, the information she has discovered comes with a deadly price.
While these stories unfold, the halfkinds continue their fight for freedom, and they're getting closer than ever.
- Main Article: Plot Summary of Volume 4: North
|Characters of Halfkinds Volume 4: North|
| POV: Ash Han - Don Leons - Falena Snow - General Rox - Iris Lawton - Ivy Lawton - Mark Allen - Maya Lawton - Two Van Faye
Alliance Members: Eli Winde
|Places of Halfkinds Volume 4: North|
|Cities/Territories: Allied City - Nyx|
|Factions of the Halfkind Series|
| Major: United Species Alliance - Brotherhood of Wolves - Gorilla Government - High Dog Council - High Human Council
Mentioned/Minor: Amphibious Alliance - Aviation Society - Cheetah Congregation - Chimp Nation - Crocodile Congress - Horned Beast Faction - Lion Authority - Pig Government - Republic of Cats - Royal Elephant Society - Tiger Legion
|Major Events of the Halfkind Series|
Volume 2: Operation Horus
Volume 3: Alpha Project
Volume 4: Implant Program
|Terms of the Halfkind Series|
|Tech: Genetic Targeting System - Implant - Insta-item - Personal Porter - Synconium|