Main Story guide for Chaos Zero Nightmare (CZN). Learn how to progress, unlock new chapters, what to do when stuck, and unlock new features in the Story of CZN.
Table of Contents
Main Story Walkthrough
Go Through the Story Chapters
The story is basically composed of stages that only contain episodes. Advance the story by reading through the episodes.
Some Stages Have Battles
Battles occur at certain points in the story. Since you can use your save data in these battles, battle them with your trained Combatants.
Chaos Appears Mid-Chapter
You will face one Chaos battle per chapter. Defeating a new story Chaos unlocks it for replay in Chaos Manifestation.
Chaos Manifestation GuideClear Promotion Missions to Unlock Next
To progress the main story in CZN, you must clear Promotion Missions. These missions become available after completing all combat missions in a chapter.
Captain Level Is Also Required
Promotion Missions also require a specific Captain Level. If your level is too low, raise it by completing Simulations and Growth Guide missions.
How to Raise Captain GradeHow to Get Unstuck on Missions
Create Save Data in Chaos
If you're struggling with story battles, we recommend creating more powerful save data in Chaos. Repeatedly challenge it to acquire powerful equipment and Epiphanies.
How to Use Save DataTrain Your Combatants
Before tackling story or Promotion Missions, ensure you raise your Combatants' Level and Potential as much as possible. If you can still improve them, continue training and then attempt the mission again.
Character Enhancement GuideUnlocked Features in Main Story
Unlock Features by Clearing Missions
Content Unlock Conditions
| Content | Unlock Condition |
|---|---|
| Combat Missions | Clear Story Chapter 1 No. 3 [Threads of Deception] |
| Activity | Clear Story 1 No. 6 [A Captain's Burden] |
| Ark City | Clear Story 2 No. 01-2 [Ark City] |
| Arkhianon Supply | Clear Story 2 No. 3 [An Unexpected Guest] |
| Trauma Code | Clear Story 2 No. 05-1 [Epione Center] |
New game features unlock as you progress through specific story missions. Since Ark City and Arkhianon Supply offer daily activities, it's highly recommended to reach Chapter 2 as quickly as possible.
Beginner's Guide & Early Game GoalsChaos Zero Nightmare Related Guides
Recommended Guides
 Chaos Manifestation Guide |  Main Story Walkthrough |
 Trauma Code Guide |  Battle Pass Guide |
 Maintenance Updates |  Growth Guide |
 Rescue Guide |  Pity System Guide |
 Save Data Guide |  How To Create Best Save Data |
Chaos Guide
 Blue Pot |  Twin Star's Shadow Guide |
 City of Mist Guide |  Zero System |
 Chaos Guide |  Basin of Hyperspace Guide |
 Burning Life Guide | - |
Galactic Disaster Guide
Galactic News Network
S1 Forbidden Catalyst 
