What can you do as a free member?

Member benefits illustration

Create your free account today and unlock all our premium features and tools to enhance your gaming experience.

Member benefits illustration

Create your free account today and save articles to your watchlist and get notified when they're updated with new information.

Member benefits illustration

Create your free account today and save your favorite games for quick access later, synced across all your devices.

Member benefits illustration

By creating a Game8 account and logging in, you'll receive instant notifications when someone replies to your posts.

Comment rating feature illustration

By creating a Game8 account and logging in, you can make use of convenient features in the comments section, such as rating and sorting comments.

Premium archive feature illustration

By creating a Game8 account and logging in, you can access Premium articles that are exclusively available to members.

Site Interface

Guest
Free Member
Article Watchlist
Game Bookmarks
Cross-device Sync
Light/Dark Theme Toggle
User Profiles
Direct Feedback
Comment Rating

Game Tools

Guest
Free Member
Interactive Map Access
Interactive Map Pins
Interactive Map Comments
Interactive Map Pins Cross-Device
Check List
Event Choice Checker
Deck Builder Cross-Device
Message Board Notification
Message Board Cross-Device
Build Planner
Stat Calculator
Diagnostic Tool
Weapon/Armor Wishlist

Want more information?Learn more

Zenless Zone Zero (ZZZ)

The Iron Witch (II) Quest Guide

Add to Watchlist

☆ New: Tier List Maker & Community Tier List Contest!
★ Upcoming: Version 2.5, Zhao, & Ye Shunguang!
2.4 Agents: Dialyn, & Banyue
2.3 Phase 2: Yidhari Release & Ju Fufu Rerun
☆ Tier Lists: Agents | W-Engines | Bangboos | Teams
Redeem Codes for free Polychromes!

Zenless Zone Zero - The Iron Witch (II) Commission Guide

Smart Mech Preschool Program, also known as The Iron Witch (II), is Grace's second Agent Story in Zenless Zone Zero (ZZZ). See how to unlock the Smart Mech Preschool Program commission, a walkthrough on how to complete The Iron Witch (II), and its rewards here!

Grace Agent Stories
Grace's Frankenstein The Iron Witch (II) Witch's Trial

Smart Mech Preschool Program Information

The Iron Witch (II) Quest Details

Required Inter-Knot Level 31
Location Brant Street, Old Town District
Client Grace
Time Anytime

The Iron Witch (II) is one of the subquests in The Iron Witch. Accepting that commission will unlock several quests under it, which can all be completed at different times to finish the questline.

The Iron Witch Quest Guide

Appears as Smart Mech Preschool Program in the Schedule

Appears as Smart Mech Preschool Program in the Schedule

This Agent Story appears as the Smart Mech Preschool Program on the Schedule after accepting the commission from Grace.

How to Unlock Smart Mech Preschool Program

Accept the Iron Witch Agent Story

The Iron Witch

Smart Mech Preschool Program and The Iron Witch (II) can be unlocked after you complete Grace's Frankenstein Agent Story commission and reach Inter-Knot level 31.

The Iron Witch Grace Agent Story Guide

The Iron Witch (II) Walkthrough

Grace Agent Quest

  1. Interact With the Objects
  2. Go to Random Play

Interact With the Two Objects

Interact With the Two Objects

Construction Site Objects Color Code
Iron Bucket Green
Wooden Box Red

Interact with the objects in the construction site in Brant Street in the correct sequence just as Grace instructed. The correct sequence would always be Red, Green, Red, Red, Green.

After doing the color sequence a couple of times, Grace will instruct you to move the two objects and it will trigger a special event with the heavy machine.

Go to Random Play

Go to Random Play

Go to Random Play video store in Sixth Street and talk to the other Proxy about everything that happened in the construction site in Brant Street and with Grace.

Smart Mech Preschool Program Commission Rewards

Quest Rewards

All Quest Rewards
W-Engine Energy ModuleW-Engine Energy Module x2 Senior Investigator LogSenior Investigator Log x4 PolychromePolychrome x25
Inter-Knot CreditInter-Knot Credit x400 Ether Plating AgentEther Plating Agent x1 DennyDenny x12500

Zenless Zone Zero Related Guides

Zenless Zone Zero -  Agent Commissions Guide

All Agent Commissions

List of All Agent Commissions

Character Agent Commissions
Nekomata Nekomata 1. Cat and Mouse Misplaced
2. Cat on Patrol
3. Caught by the Cat Burglar
Soldier 11 Soldier 11 1. Passing Off as Fake
2. Deep Treason
3. Mole in the Hole (III)
Grace Grace 1. Grace's Frankenstein
2. The Iron Witch (II)
3. Witch's Trial
Koleda Koleda 1. Schoolyard Powerhouse (I)
2. Back to School
3. Farewell, School
Lycaon Lycaon 1. Thieves and Guardians
2. And the True Heroes are Always Behind the Scenes (II)
3. Liars and Traitors
Rina Rina 1. Until Your Memory Fades (I)
2. Until Your Memory Fades (II)
3. Sweetcakes that Never Expire
Qingyi Qingyi 1. The Case of a Missing Bangboo (I)
2. The Case of a Missing Bangboo (II)
3. Save Bangboo Teddy

All Commissions Guide

Author

    Please participate in our site
    improvement survey
    12/2025
    Would you assist in
    improving Game8's site?
    ×
    This survey will take about 1 minute.
    Your answers will help us to improve our website.
    We are listening to our users' valuable opinions and discussing how to act on them.
    The information collected through this survey will be used for the purpose of improving our services. In addition, the information will only be disclosed a part of a statistic in a format that will not allow identification of personal information.
    Begin Survey

    All rights reserved

    Guide Index