Addison opposes a plan put into action by the rest of the staff before she joined the Practice, while Violet is asked to put her license in jeopardy by one of her best friends, who happens to be running for office.

Addison treats two pregnant women who share the same husband.

Addison is attracted to Wyatt, the rival practice's brash doctor, while Violet secretly dates Pete and Sheldon at the same time, and Cooper gets closer to Charlotte in a family emergency.

After suffering a severe asthma attack at Seattle Grace, Sam is treated by Naomi and Bailey who try to determine the cause. Meanwhile Addison assists Derek in a case involving a pregnant woman.

Addison faces her feelings for Noah as Morgan goes into labor.