Special Containment Procedures: SCP-XXXX is kept inside a secure storage locker at Site-██. SCP-XXXX must be monitored at all times. If SCP-XXXX emits a tone, the number on its display is to be recorded, and Site-██ immediately put on alert for a potential imminent security breach. A drone must automatically remove any object(s) within SCP-XXXX and place them inside an opaque containment unit. These objects must not be observed by personnel at this time. After the correct number of hours elapses, equal to the magnitude of the number recorded previously, some commonplace object must be placed inside SCP-XXXX. The number recorded previously is to be entered using SCP-XXXX's keypad. The object may then be retrieved from the containment unit and safely observed. If these procedures are carried out successfully, Site-██ may resume normal operation.
Description: SCP-XXXX is a small metallic box resembling an electronic safe. Alongside its door is a numeric keypad and a display. On the reverse side of SCP-XXXX is a sticker with the following text:
DISCLAIMER
Joe's Security Systems Inc. is not liable in the case of spacetime ruptures caused by use of Joe's Temporally-Bidirectional Miniature Storage Unit™.
Do not attempt to disrupt any causal loop created as a result of Joe's Temporally-Bidirectional Miniature Storage Unit™ usage.
If you suspect a spacetime rupture may occur, immediately contact your local Causality Administrator at [REDACTED].
Unlike an ordinary safe, SCP-XXXX can be opened at any time. When an object is placed inside SCP-XXXX, and a number entered with the door closed, the object instantly disappears from SCP-XXXX. The number entered corresponds exactly to the number of hours elapsed before the object reappears inside SCP-XXXX. When this occurs, SCP-XXXX emits a short tone, and the display shows the number of hours elapsed. Notably, it is possible to give a negative number as input. SCP-XXXX does not accept inputs less than -24 or greater than 24.
Addendum 1: Experiment Log XXXX-E
Experiment XXXX-E-1
Supervisor: Dr. Jason Moore
Procedure: A ballpoint pen will be placed inside SCP-XXXX, and an input of “3” will be entered at exactly 12:00 UTC on 05/10/████.
Result: The pen reappeared inside SCP-XXXX at exactly 15:00 UTC on 05/10/████.
Experiment XXXX-E-2
Supervisor: Dr. Jason Moore
Procedure: A ballpoint pen will be placed inside SCP-XXXX, and an input of “-2” will be entered at exactly 12:00 UTC on 06/10/████.
Result: A ballpoint pen, identical to the one intended for use in the experiment, appeared inside SCP-XXXX at exactly 10:00 UTC. The original pen was placed inside SCP-XXXX at 12:00 UTC without incident.
Experiment XXXX-E-3
Supervisor: Dr. Jason Moore
Procedure: Any object will be placed inside SCP-XXXX, and an input of “-3” will be entered at exactly 12:00 UTC on 08/10/████.
Result: SCP-███-█ appeared inside SCP-XXXX at exactly 9:00 UTC. Dr. Moore requested access to SCP-███-█, which was denied by the Site Director. At 10:15 UTC, a major containment breach at Site-██ occurred. At 11:24 UTC, Director [DATA EXPUNGED] which gave Dr. Moore's research team enough time to retrieve SCP-███-█ and place it inside SCP-XXXX at 12:00 UTC.
Experiment XXXX-E-4
Supervisor: Dr. Sofia Wong
Procedure: A playing card will be chosen at random and placed inside SCP-XXXX with an input of “-1” at exactly 12:00 UTC on 23/11/████. At 11:00 UTC, a robotic arm will automatically remove the playing card from SCP-XXXX, and place it inside a opaque box. The card in the box will not be observed at any point in time prior to 12:00 UTC.
Result: An object appeared inside SCP-XXXX at 11:00 UTC and was placed in the box without being observed. At 12:00 UTC, Dr. Wong selected a jack of hearts and placed it inside SCP-XXXX. The object was then removed from the box, and was observed to be the jack of hearts.
It appears that objects which emerge from SCP-XXXX conform to the observer effect. The object remains in a state of quantum superposition until it is observed. Put simply: as long as you don't look at what came out, you can put anything you want into SCP-XXXX, and that will retroactively become the thing that came out. This might be useful in preventing a repeat of XXXX-E-3. -Dr. Wong
Experiment XXXX-E-5
Supervisor: Researcher B████ S████
Procedure: Any object will be placed inside SCP-XXXX, and an input of “-1” will be entered at exactly 12:00 UTC on 05/12/████. The object will be removed by a drone at exactly 11:00 UTC on 05/12/████, and placed inside an opaque box. Personnel will not observe the object until after 12:00 UTC.
Result: An object appeared inside SCP-XXXX at 11:00 UTC and was placed in the box without being observed. At 12:00 UTC, Researcher S████ placed a wristwatch inside SCP-XXXX. The object was removed from the box, and was observed to be the same wristwatch placed inside SCP-XXXX by Researcher S████.
This confirms the hypothesis put forward by the late Dr. Wong. I will immediately be submitting a request for changes to containment procedures. -Researcher S████.
Addendum 2: Incident Report XXXX-I-1
At 14:23 UTC on 25/11/████, SCP-XXXX emitted a tone, with its display showing the number “-24”. Upon opening SCP-XXXX, personnel observed the severed head of Dr. Sofia Wong.
Dr. Wong proposed to take no action. Proposal was approved by the Site Director.
At 13:23 UTC on 26/11/████, another instance of the severed head of Dr. Sofia Wong appeared inside SCP-XXXX. The display showed the number “-24”.
Dr. Wong proposed to:
- Take the head which appeared most recently in SCP-XXXX, and place it inside SCP-XXXX with the input “-24” at 14:23 UTC on 26/11/████.
- Take no further action.
Proposal was approved by the Site Director.
The first part of the above proposal was carried out successfully.
At 12:23 UTC on 27/11/████, yet another instance of the severed head of Dr. Sofia Wong appeared inside SCP-XXXX. The display showed the number “-24”. Attached to the head, with duct tape, was the following note in Director ██████'s handwriting:
THIS IS IT
YOU ACTUALLY HAVE TO DO IT THIS TIME
DO NOT ATTEMPT TO DISRUPT THE LOOP
Dr. Wong proposed to:
- Take the head which appeared most recently in SCP-XXXX, and place it inside SCP-XXXX with the input “-24” at 13:23 UTC on 27/11/████.
- Contact the “local Causality Administrator”.
Proposal was approved by the Site Director.
The first part of the above proposal was carried out successfully.
Below is a transcript of the conversation between Dr. Wong and an entity known as the “local Causality Administrator”, contacted by [REDACTED], as specified in the disclaimer on the reverse side of SCP-XXXX.
Causality Administrator (CA): You've reached the Office of the Causality Administrator for Local Universe Cluster [REDACTED], how may I help you?
Dr. Wong (DW): Uh, yes, hello. There's an issue with a… Temporally-Bidirectional Miniature Storage Unit. The disclaimer on the back says to contact you in the case of a causal loop.
CA: I see. Please hold.
DW: Actually, the situation is quite urgent, so if-
Dr. Wong was interrupted by a clicking sound, followed by an automated message.
CA: Thank you for contacting the Office of the Causality Administrator. A representative will be with you very shortly. We appreciate your patience.
DW: Fuck. God dammit. Interdimensional fucking douchebag.
The automated message was repeated for the next hour and fifteen minutes.
CA: Hello. Thank you for holding. Please explain what appears to be the issue with your Storage Unit.
DW: Yes! Hello. Well… something came out of it recently, from a point in the future. And it's not something that we can easily put into it.
CA: Sounds like an ordinary causal loop. If it came out of the storage unit, it must have come into it at some other point in time. Closing the loop is simple enough.
DW: Yes, but-
CA: Look, is it absolutely impossible to place this “something” in the storage unit?
DW: No, but-
CA: So you shouldn't be contacting this line. Our office deals with potential spacetime ruptures, not trivial causality loops.
DW: Could you just lis-
CA: Thank you for your call. Have a nice day!
Dr. Wong proposed to take no further action. Proposal was denied by the Site Director.
I'm sorry, but I can't risk the fabric of spacetime imploding for a single researcher, no matter how good they are. -Director ██████
Researcher B████ S████ proposed the following course of action:
- Terminate Dr. Sofia Wong by decapitation.
- Attach a handwritten note by the Site Director, identical to the one which came out of SCP-XXXX, to Dr. Wong's head using duct tape.
- Place Dr. Wong's head inside SCP-XXXX at exactly 12:23 UTC on 28/11/████ with the input “-24”.
Proposal was approved by the Site Director.







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