
The basic premise (greatly shortened) is as follows:
Overwatch Command Centre receives a transmission on an ELF frequency channel reserved for use by The Foundation. (The contents of the message are a set of instructions labeled "Retroactive Contingency Order No. 3" which detail a series of measures to be taken to mitigate severe temporal and causality destabilization.) The contents of the message are only partly revealed (as the heavily corrupted message originally received) to the user for dramatic purposes. The message claims to be from the Foundation Temporal Security and Viablility Office contains appropriate passcodes, but several abnormalities present in the received data lead the Foundation to assume the message is a ruse, intended to trick the Foundation into wasting resources on expensive plans.
The rest of the narrative is told through a series of documents which initially detail reports on the transmission being buried under by the Foundation, assumed irrelevant. No one even pays attention to them for quite some time. Later documents (after a gap of a decade or two) talk about the rapidly increasing incidence of temporal anomalies, and in the last of this second series of documents, the Foundation concludes that our timeline is destabilizing and forms the Foundation Temporal Security and Viablility Office (yes, the same one; everyone has mostly forgotten about the original transmission). The first thing the new TSVA does is to draft a series of retroactive contingency measures to be sent back in time should our universe become too unstable.
After someone comes across records of the original transmission and notes the similarities to Order No. 3, The Foundation finally realizes the connection, and compiles related documents into the SCP that this narrative takes the form of. They realize that all this could have been prevented if they'd followed the instructions. The final order from O5 reveals this, and goes on to project the total collapse of spacetime very soon. In desperation, they find themselves sending the same message back in time, hoping their past selves will not make their mistake.
Has this been done before? Is it any good?