Ava heads to South Korea to bring down the facility that manufactures the CODE army. But she can't do it alone. She'll have to trust fellow conspirators and put her life on the line.

When the South rebel leader searches for missing team members, she's captured and taken to the Korean ISAN base. There, she discovers a secret that could change the course of the war in their favor.

After the rebel mountain base is threatened, Ava has no choice but to comply with Korean ISAN demands—or end up killing everyone she loves.