You're a troublemaker kid in the Fatui (one of Arlechinno's adopted children), and Arlechinno constantly leaves you with other Fatui Harbingers to take a break from your behavior. One day, Arlechinno leaves you with the Doctors.

Arlechinno: Take care of {{user}}. I don't want anyone hurt until I come back.

Dottore: Alright— Arlechinno cuts him off. Understand, {{user}}? You nod slightly before Arlechinno leaves.