Addison and Charlotte work on a patient together.
Addison and Sam work to bring the practice out of bankruptcy, as all of the doctors look for additional clients and new income streams. Violet's friendship with Cooper is on the brink.
A young couple is having difficult conceiving a child. In the process of getting help with this, a discovery is made that the couple are half-sibs.
As Addison's relationship with Kevin (David Sutcliffe) heats up, Charlotte tries to lure her to St. Ambrose Hospital with promises of surgeries. Meanwhile, Sam questions his ability to keep Oceanside Wellness afloat.
Sam and Naomi are against each other to lead the practice with unexpected results. Addison treats a girl trying to hide her past while Cooper has a dilemma of his own affecting his professional career.
Violet must choose whether or not to break the law for a friend, while Addison's choices as leader of the practice may place Oceanside in peril.
Addison treats two pregnant women who unwittingly share the same husband; Violet confronts Charlotte about her liaison with Cooper; Dell reveals a special woman in his life.
Addison's brother makes a surprise visit, causing trouble for her, Sam and Naomi; Meg comes back to try and make it work with Pete; a patient accused of a crime angers Violet and Dell.
Pacific Wellcare is finally open and let the stealing begin.
Dell proposes the creation of an in-house adoption program.
Meg return's home and notices that Violet and Pete seem a little to close than when she left; Kevin has questions about where him and Addison are headed; Cooper treats a boy with a mysterious past; and Pacific Wellcare continues to steal business away from Oceanside Wellness.
A measles outbreak forces Oceanside into quarantine lockdown, while Naomi pressures Addison into helping her Pacific Wellcare rival, Wyatt, on a case.
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.
Violet discovers she's pregnant but doesn't know who's the father. Addison feels guilty after her kiss with Wyatt. Sam and Pete are ask by a friend to help him die, while Charlotte proposes to Cooper.
Archer causes problems between Addison and Naomi, after he moves to LA to work at Pacific Wellcare. Meanwhile, Cooper tries to help Voilet talk to both Pete and Sheldon about her pregnancy.
When Archer suffers a seizure, Addison and Naomi, search for a cause and a cure. They have to even call Derek for help. Meanwhile, Violet tells about the pregnancy to Sheldon and Pete, while Cooper is left to take care of a seven year-old abandoned patient.
Bailey and Naomi try to discover why Sam has a sudden asthma attack while Addison helps Derek save the life of his pregnant patient. Pete, Violet and Coop tend to a mother with post partum psychosis who tried to hug her baby.
Archer and Naomi grow romantically closer, while Addison suspects her brother is up to her old tricks again.
Addison starts flirting with a colleague at St. Ambrose Hospital. Meanwhile Sheldon and Pete try to convince Violet to take a paternity test to see who the father is.
Dell is dealing with the absence of his daughter since his ex moved for a new job. Cooper has to give devasting news to a cancer patient. Meanwhile Addison and Violet have to help a psych patient who lost her baby to go under surgery, and Sam and Addison find themselves restraining their feelings towards their impossible loved ones.
Addison is having a difficult time dealing with her feeling for Dr. Noah and Violet starts getting jealous when she finds out that Pete is going out with a single mother.
Sam starts to reconsider his friendship with Naomi and Addison with Noah's help try to save a pregnant woman with heart problems. Meanwhile, Pete's relationship with Lisa gets complicated with Violet's pregnancy.
Violet comes to the point of having to choose between Pete and Sheldon. Dell gets concerned for his daughter when Heather comes back into town all drugged up. Meanwhile, Naomi must decide if it's in her best interest to stay in the practice at Oceanside Wellness.