Zibby Allen

The nurses at Seattle Grace Hospital go on strike, leaving the doctors to fend for themselves; an elderly patient's friends (June Lockhart, Betty Garrett and Rae Allen) bring Meredith's mistake to light.

Cristina meets Burke's parents; the interns campaign for Izzie's reinstatement; Addison takes a break from her hospital duties; a surgical patient lives what may be her last day to the fullest.

Izzie faces her past and finds comfort in George; Alex has an attachment to Jane Doe; Meredith and Derek question their status; Cristina resolves to fight for her relationship with Burke.

Cristina is awarded the first solo surgery among the residents, but must give it up and choose her replacement and Callie can't figure out if Sadie is friendly or flirtatious.

Tensions are running high at Seattle Grace with all eyes on Derek as he is set to perform his first surgery after his breakdown.

As Adele's condition deteriorates, Richard considers making a change; an explosion at a coffee shop results in a busy ER; Callie helps Meredith study; Lexie helps Alex and Arizona care for an intern's premature baby.