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Zenless Zone Zero (ZZZ)
When Sandwiches Come A Knockin' Event Guide
☆ 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!
When Sandwiches Come A Knockin' is a food truck and sandwich delivery event in the Zenless Zone Zero (ZZZ). See all the When Sandwiches Come A Knockin's available information, all the possible rewards, and its release date here!
When Sandwiches Come A Knockin' Event Information
When Sandwiches Come A Knockin' Event Details
|
|
| Event Start | December 04, 2024 |
|---|---|
| Event End | December 16, 2024 |
| How to Unlock | Reach Inter-Knot Level 30 Reach When Sandwiches Come A Knockin in Main Story Chapter 2 Interlude |
| Rewards |
|
The When Sandwiches Come A Knockin' is a food truck and sandwich delivery event where you can help set up a food truck in Lumina Square and deliver sandwiches to VIP customers in exchange for reviews and rewards!
When Sandwiches Come a Knockin' Event Schedule
Sandwich Event Stages and Unlock
| Unlock | Stage Details |
|---|---|
| Dec. 04, 2024 |
Day 1: Food Truck Shift Order Objective: • Place an order for Zhu Yuan - the first lucky customer |
| Dec. 05, 2024 |
Day 2: A Shared Song Order Objective: • Place an order for the lucky customer - Tarshi |
| Dec. 06, 2024 |
Day 3: Afternoon Tea on the Terrace Order Objective: • Place an order for the lucky customer - Ellen |
| Dec. 07, 2024 |
Day 4: Picky Foodie Order Objective: • Place an order for the lucky customer - Orlenda |
| Dec. 08, 2024 |
Day 5: Encounter with a "Big Shot" Order Objective: • Place an order for the lucky customer - Soukaku |
Click on the links on the table to jump to a guide!
When Sandwiches Comes a Knockin' Day 1 Guide
| Circuit Puzzle |  |
|---|---|
| Zhu Yuan's Lcoation |  |
The objective for Day 1 is to take Zhu Yuan's order and deliver it to her at the New Eridu Public Security at Lumina Square. Once the order is complete, repair One-Dennyboo by fixing its circuits before heading out.
Afterwards, take a photo of Zhu Yuan, Seth, and One-Dennyboo for the review before returning to the food truck.
When Sandwiches Comes a Knockin' Day 2 Guide
| Signal Calibration Puzzle | |
|---|---|
| Tarshi's Location |  |
The objective for Day 2 is to take Tarshi's order and deliver it to him near the playground at Lumina Square. Once the order is complete, repair Look Away the Bangboo by completing the signal calibration puzzle.
Afterward, take a photo of Tarshi and Look Away for the review before returning to the food truck.
When Sandwiches Comes a Knockin' Day 3 Guide
| Circuit Puzzle |  |
|---|---|
| Ellen's Location |  |
The objective for Day 3 is to take Ellen's order and deliver it to her on the second floor of Coff Cafe at Lumina Square. Once the order is complete, repair One-Dennyboo by completing the circuit puzzle.
Afterward, take a photo of One-Dennyboo with Ellen and Monna for review before returning to the food truck.
When Sandwiches Comes a Knockin' Day 4 Guide
| Signal Calibration Puzzle | |
|---|---|
| Orlenda's Location |  |
The objective for Day 4 is to take Orlenda's order and deliver it near the Metro Station at Lumina Square. Once the order is complete, repair Look Away the Bangboo by completing the signal calibration puzzle.
Afterward, take a photo of Look Away with Orlenda for review before returning to the food truck.
When Sandwiches Comes a Knockin' Day 5 Guide
| Circuit Puzzle |  |
|---|---|
| Soukaku's Location |  |
The objective for Day 5 is to take Soukaku's order and deliver it to her at Scott Outpost. Once the order is complete, repair One-Dennyboo by fixing its circuits before heading to Scott Outpost.
Afterward, take a photo of Soukaku, Harumasa, Miyabi, and One-Dennyboo for the review before returning to the food truck.
When Sandwiches Comes a Knockin' Orders Guide
All Orders Guide and Answers
| Order | Menu Guide and Answers |
|---|---|
 Day 1: Zhu Yuan's Order |
1) Question: What was the first item Zhu Yuan ordered? 1) Answer: Beef and Cheese Sandwich 2) Question: What was the second item Zhu Yuan ordered? 2) Answer: Sausage Sandwich 3) Question: What was the third item Zhu Yuan ordered? 3) Answer: Milk 4) Question: What was the fourth item Zhu Yuan ordered? 4) Answer: Lemon Tea |
 Day 2: Tarshi's Order |
1) Question: What was the first item Tarshi ordered? 1) Answer: Avocado Chicken Sandwich 2) Question: What was the second item Tarshi ordered? 2) Answer: Cheese Fried Dumplings 3) Question: What was the third item Tarshi ordered? 3) Answer: Lemon Tea |
 Day 3: Ellen's Order |
1) Question: What was the first item Ellen ordered? 1) Answer: Guacamole Hot Dog 2) Question: What was the second item Ellen ordered? 2) Answer: Vegetarian Sandwich 3) Question: What was the third item Ellen ordered? 3) Answer: Bangboo Potato Wedges 4) Question: What was the fourth item Ellen ordered? 4) Answer: Soda |
 Day 4: Orlenda's Order |
1) Question: What was the first item Orlenda ordered? 1) Answer: Beef and Cheese Sandwich 2) Question: What was the second item Orlenda ordered? 2) Answer: Fish Hot Dog with Pineapple 3) Question: What was the third item Orlenda ordered? 3) Answer: Buttered Cheese Corn Cup |
 Day 5: Soukaku's Order |
1) Question: What was the first item Soukaku ordered? 1) Answer: Spicy Beef Hotdog 2) Question: What was the second item Soukaku ordered? 2) Answer: Cheese Fried Dumplings 3) Question: What was the third item Soukaku ordered? 3) Answer: Fish Hotdog with Pineapple 4) Question: What was the fourth item Soukaku ordered? 4) Answer: Bangboo Potato Wedges |
How to Play When Sandwiches Come A Knockin'
When Sandwiches Come A Knockin'Event Guide
Collect Orders for the Chef Bangboo
Each day, visit Chef Bangboo at the food truck in Lumina Square and collect orders for the selected lucky customers.
Relay the customer's order to the Chef Bangboo so it could prepare the order for delivery.
Complete Puzzles to Set Delivery Route
Once the order is completed, set the delivery route for the delivery bangboo by completing a circuit or signal calibration puzzle. Afterward, deliver the order with the Bangboo.
Take a Group Photo
After delivering the order, take a group photo of the customer with the delivery bangboo for the food truck's review.
When Sandwiches Come A Knockin' Event Rewards
All When Sandwiches Come A Knockin' Rewards
| All Event Rewards | ||
|---|---|---|
|
Polychrome
x300 |
Boopon
x5 |
Senior Investigator Log
x10 |
|
W-Engine Energy Module
x10 |
Bangboo System Widget
x10 |
Denny
x150000 |
Here are all the rewards for the When Sandwiches Come A Knockin' event when you collect all 5 customer reviews for Chef Bangboo!
Battle Pass Rewards
| Requirements | Rewards |
|---|---|
| Get 5 reviews from 5 lucky customers in the event "When Sandwiches Come a Knockin'" |  x1600 |
Collect all 5 reviews from the customers in the event to get 1,600 City Fund EXP to level up your Battle Pass for more rewards!
New Eridu City Fund Battle Pass Guide
Zenless Zone Zero Related Guides
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|---|---|---|
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12/03/2025 - 12/29/2025 | |
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|
11/28/2025 - 12/29/2025 | |
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|
11/26/2025 - 12/29/2025 | |
 En-Nah Chess Saga
|
11/26/2025 - 12/29/2025 | |
 The Final Callback
|
11/26/2025 - 12/17/2025 | |
 Signal Search Thank-You Gift
|
10/15/2025 - 01/07/2026 | |
Upcoming Events
| Event Guide | Event Duration | |
|---|---|---|
 Data Bounty - Combat Simulation
|
12/24/2025 - 12/29/2025 | |
 En-Nah Into Your Lap
|
12/17/2025 - 12/29/2025 | |
 100% Miss Bunny
|
12/17/2025 - 12/29/2025 | |
 Advanced Bounty - Area Patrol
|
12/11/2025 - 12/16/2025 | |
 Simulated Sequence Showdown
|
12/08/2025 - 12/29/2025 | |
Permanent Events
| Event Guide | How To Unlock/Rewards |
|---|---|
 Road to Proxy Greatness |
Reach Inter-Knot Level 8. |
 Rookie on the Road |
Reach Inter-Knot Level 8. |
Past Events
| Event Guide | Event Duration | |
|---|---|---|
 141 Battery Artwork
|
07/05/2025 - 07/15/2025 | |
 141 Eco Art Exhibition
|
11/12/2025 - 11/24/2025 | |
 141 Exclusive Bazaar
|
08/02/2024 - 08/12/2024 | |
 141 Friendship Fair
|
10/27/2024 - 11/04/2024 | |
 141 Going Green for Everyone
|
02/26/2025 - 03/10/2025 | |
 A Dream Come True at Last
|
01/24/2025 - 02/05/2025 | |
 A Tale Through the Looking Glass
|
05/19/2025 - 06/05/2025 | |
 Band of Brave Bangboo
|
09/05/2025 - 10/13/2025 | |
 Bangboo Bash
|
04/27/2025 - 05/12/2025 | |
 Bangboo vs Ethereal
|
12/20/2024 - 01/20/2025 | |
All Web Events
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When Sandwiches Come A Knockin' Event Guide
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