Who's the boss? Weaver may be head of the ER, but Greene has his own ideas about how to handle situations and after his mother's death the two of them have their worst conflict on the job yet. Boulet says "yes" to Reggie, and Corday accepts Romano's surprise job offer. A brash new resident arrives and manages to annoy just about everyone. Carla confronts Benton about his not allowing her to leave the country with their son.