Moe Irvin

One person's fight to live affects everyone at Seattle Grace, in the dramatic conclusion to "Grey’s Anatomy's" three-episode story arc.

Meredith Grey and four other first-year surgical interns try to balance life and work at Seattle Grace Hospital.

The nurses' complaints about Mark Sloan's trysts result in a date-and-tell policy; Cristina is forced to face her feelings for Burke; Meredith and Derek admit a veteran into their clinical trial.

The men of Seattle Grace go on a camping trip together, Addison and Callie must team up to work on a patient, Meredith assists Sloan with a procedure unlike any she has experienced, and, suspicious of her recent actions at the hospital, Bailey confronts Cristina.

Cristina meets Burke's parents -- and in the most awkward of circumstances -- the interns campaign for Izzie's reinstatement to the surgical intern program, Addison takes a break from her hospital duties, and a surgical patient lives what may be her last day to the fullest.

While undergoing aggressive cancer treatment, Izzie focuses on planning Meredith and Derek's wedding; Callie's father visits; Owen seeks help with his PTSD.