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Mysterious Signal is a Main Mission in the Smoking Embers quest series of Arknights: Endfield. Check out how to unlock this mission, its walkthrough, and all its rewards in this guide!
| Previous Mission | Next Mission |
|---|---|
| Temporary Peace | Conference of the Four |
List of Contents
| Mission Type | Main Mission |
|---|---|
| Quest Line | Smoking Embers |
| Chapter | Chapter 1 - Process 4 |
| Location | Valley IV, Power Plateau |
Mysterious Signal is the seventh quest under the Smoking Embers mission series. This quest is under Chapter 1 - Process 4 of the main story and is located in Power Plateau.

Mysterious Signal is immediately unlocked after completing the Temporary Peace quest and has no level restrictions.
Temporary Peace Main Mission Guide

Talk to Yvonne at the Originium Science Park and discuss about dealing the remaining Active Blight patches in Valley IV.

Go to the TP-Point just outside the Research Center. To the right is the first Protocom Signal Tower. Approach to connect the Signal Tower.

Use the TP Point in the Logistics Area. Head down the platform and head east. Use the jump pad to get past the gap and go to Royle by the Second Protocom Tower. Approach to connect the Signal Tower.

Go back to the Originium Science Park and talk to Yvonne. She amplifies your Protosync to achieve the desired Blight scanning feature.

Head down the shaft to the first floor with Yvonne. She presents a device that simulates Blight wavelengths to make glops of Blight.

Perform a scan to decrypt a mass of Active Blight and expose its Blight Core. You can now directly perform scanning with your Protosync to decrypt Active Blight.

Teleport to the TP-Point near Plateau Trunkway and make your way to the Originium Power Plant. As you enter, you hear a battle happening at the second floor.

Head up the stairs to see the damage done to the area. Scan the Active Blight that blocks the path and destroy its exposed core. It is revealed that Lycia has been causing the destruction, and Perlica vaguely talks about her intentions.
| Total Quest Rewards |
T-Creds x8700 |
Protoprism x15 |
Origeometry x3 |
|---|---|---|
Arms INSP Kit x20 |
||
You can also get 500 Operational EXP for completing the mission.

| Prologue | |
|---|---|
| Process: Awakening | |
| Chapter I: Process I - The Broken Lands | |
| Break the Siege | Valley Reboot |
| Rally and Unite | Westward into the Vale |
| Secure Sanctuary | Building an Outpost |
| Through the Haze | Fort Showdown |
| Chapter I: Process II - The Turbid Heavens | |
| Paving the Way | Work Preparation |
| Maintenance Progress | - |
| Chapter I: Process III - Path of Ascension | |
| The Mission Continues | Cross the Science Park |
| Park Way Party | Walk in the Park |
| Mystery in the Building | Down the Hill |
| Shattered Veins | Lodespring Crossing |
| Cradle of Ages | Eve of Battle |
| Chapter I: Process IV - Smoking Embers | |
| Entering the Endgame | Counterstrike Brewing |
| Scaldings of Utjug | Frontline Rush |
| Undying Cinders | Temporary Peace |
| Mysterious Signal | Conference of the Four |
| Work Preparation | - |
| Chapter II: Process I - Lost in the Marsh | |
| Arrival at Wuling | Stumbling Into Qingbo Stockade |
| Destination Wuling | - |
| Chapter II: Process II - The Way of Water | |
| A Glance of Astonishment | A Breeze Away |
| Of Grace and Gentle Might | - |
Mysterious Signal Main Mission Guide

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