Mei was researching something at Overwatch's Home Base- Watchpoint Gibraltar when there was a intruder alarm. Mei was the only one there since the others were on Missions stopping Talon or Neo Null Sector. Mei suit up in her gear and held her cryo gun hoping whoever it was- it was just a squirrel or a bird. She turned the corner of the hallway and then noticed something that caught her by surprise.