Addison and Pete treat a recently married couple who are having sexual problems. Cooper is trying to figure out why four siblings are all suffering from the same mysterious illness. Maya tells Naomi she's been hoping her and Sam would divorce since she was in the third grade. Meanwhile, Violet is trying to convince a patient to leave her husband, even though, she is having trouble letting go of her ex-boyfriend who is now married.

Watch Video A flirting patient named Andrea causes a male nurse to feel uncomfortable, even though he feels the connection. Later, the same male nurse must treat a woman who is not at all pleased by the fact that she's being treated by a man. He also helps treat a runner named Nicole. A very young girl drops by the clinic because she thinks she may have an STD.

Addison tries to fix the financial troubles at Oceanside Wellness, but ends up doing more harm than good. Meanwhile, Violet's friend asks her to break the law to help her while Maya hopes that Sam and Naomi are getting back together for good.

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.

With her relationship with Kevin on the rocks, Addison finds herself attracted to Wyatt. Violet looks for a way to have a relationship with both Pete and Sheldon. Meanwhile, Cooper and Charlotte become closer after a family emergency.

Addison performs a complex utero surgery, proving not only her talents to her father but giving them some common ground. Sam and Naomi deal with have a family crisis when they discover Maya is growing up way too fast. Violet does the unthinkable.

Desperate to help his pregnant daughter, Mark (Eric Dane) follows Addison back to Oceanside Wellness, Dell and Naomi struggle to raise their children under the same roof, and Violet and Cooper heatedly disagree on how to treat a patient on.

Maya shocks Sam and Naomi, while Pete and Fife disagree on patient care.

Addison and Cooper are counseling a couple who must pick a child to save with their newborn's cord blood. Meanwhile Dink wants to marry Maya.

It's Maya's wedding day and while Violet helps Sam prepare, a furious Naomi still refuses to take part as she works with Addison and Pete to save a premature baby. Meanwhile, Cooper becomes suspicious of Charlotte's new boyfriend and thinks that he may be abusing drugs.

Naomi begs Fife to use his still experimental treatment to help William's advanced ALS. Violet and Amelia treat a woman with a brain tumor, while Sheldon decides to vie for Charlotte's affections.

Maya and her unborn baby are fighting for their lives on the operating table, and Addison, Amelia and Fife try everything humanly possible to save them. Meanwhile, Sam operates on an incoming crash victim and later makes a grim discovery; Cooper makes an ill-timed but valiant effort with Charlotte, and the staff’s world gets rocked by an unexpected death.