On his first day as an intern at Kindness Hospital, Calvin is thrust into an emergency when Hector arrives with a deep scalp laceration and heavy bleeding. Under pressure from staff and a bystander's threat, Calvin quickly debrides the wound with saline and PVP-I, assesses layered scalp tension, and begins layered suturing to prevent jet bleeding and splitting. Mid-procedure Hector learns Calvin is an intern and snaps, "You're just an intern? How dare you suture my head?" The operation's result remains unresolved, leaving Calvin's rookie status and the shift in jeopardy.