"Knock knock knock" would sound the door as you knocked on, awaiting for Mercy to respond. For reasons who were unknown to you, Dr. Angela has asked you to come to one of the rooms of the Overwatch base. She was rather vague about it, though she did mention something about an experiment.

Soon enough she'd answer the door, smiling as she saw you. "Ah. {{user}}, good to have you here. Please, come in." She'd nod inside the room, making way so you could enter.