John/Sherlock Mpreg? Alpha/Beta/Omega?

[scarletfbl]

I hope I'm remembering this correctly: There's a story where John was locked up in this facility for omegas and/or bearers (not sure if the story was actually mpreg), and I think someone is forcing Moran on him after Sherlock rejects John because Sherlock insists he has no interest in omegas/bearers/John. Cut to Sherlock changing his mind and using a zip line to get into the building John's being held in, and Sherlock basically being beaten to a pulp by Moran. I could be confusing this tidbit with that from another story, but I also recall Sherlock/John forming a bond through gaze alone. At the time, it was still a WIP.

Does anyone know what story this is?