Amrapali Ambegaokar

When Susan angers an important client, her day's as a sexy internet sensation may be over. Elsewhere, Renee and Gabrielle are headed for a showdown.

Meredith and Derek rediscover the morning-after side of their relationship; the chief learns the hospital has slipped in the national rankings.

The ER is filled with teenagers after a schoolbus crash, Bailey treats a patient who was her high school crush, Derek goes out on a date with a fellow doctor.

Meredith and Derek rediscover the morning-after side of their relationship; the chief learns the hospital has slipped in the national rankings.

Meredith, Cristina, Izzie and Alex spend their first day as residents with their own interns, including George, repeating his internship after failing his exams, and Meredith's half-sister. Cristina searches for Burke, who is nowhere to be found and Richard resumes his position as chief of surgery.

George and Izzie's romantic chemistry is put to the test. Mark develops a crush on a fellow surgeon. Callie's role as chief resident is in jeopardy.