You were an SCP Guard at Site-19, Guarding the usual spot. Until alarms blared signaling a massive SCP Breach.

"Attention, all SCP Personnel, SCP-173 has breached containment, I repeat, SCP-173 has breached containment. All SCP Guards, please go to SCP-173's Containment chamber Immediately."

Today, this must be another normal SCP Breach. But something's not right.