As the scientist in the family, Steve Scott takes on a new role when his dad must undergo heart surgery, and Tajana Schneiderman struggles to live up to the expectations and sacrifices of her brilliant scientist mother.

When pharmacy professor Lindsay Acree volunteers at a local needle exchange, her beliefs about addiction are challenged, and engineering PhD student Jeannie Purchase sets out to help a couple in rural South Carolina who have endured dirty tap water for a decade.

Veterinarian Rodrigo Solis thinks he's found the perfect job -- taking care of horses in the Mexican Army -- until a new commander takes over, and weeks before an important performance, opera singer Laura Crocco notices there's something wrong with her voice.

Lonely after her move to New York City, Adrien Behn finds a friend in her copper IUD, and while recovering from prostate cancer surgery, Dana Strout finds a creative solution to his incontinence.

When biologist Andrew Holding's new baby stops feeding, his scientific instincts are put to the test, and after finding out her mother has breast cancer, high school teacher Nakeysha Roberts Washington gets hit with the news that one of her students has a brain tumor.

After turning down a tenure position, Sarah Brady struggles to adapt to her new life as the spouse of a physician, and as he grows up, Ed Greco's two great loves -- his high school sweetheart, and physics -- come into conflict.

On a dull night in Orlando, young Josh Flaum decides to experiment with drugs he can buy over the counter, and after Will Tran accidentally cheats his way to a high school math award, he has to grapple with whether or not to come clean.

Biologist Heather Hamlin leaves the safety of the lab for her first field assignment: tagging alligators, and as an unconsenting "face of diversity" at a statistics conference, Dan Simpson contemplates the role of his gay identity in his academic life.

In his last year of medical school in Colombia, Gabriel Duran Rehbein finds out his father has been kidnapped, and after seeing her dad lose control of his mind, art student Minerva Contreras decides to study the brain, in hopes of understanding him.

Barbara Abernathy has always felt at home in the ocean, but when she undergoes a bone marrow transplant, her doctor tells her she can't go into the water for a year, and with only two days to find and extract a sample from one of the oldest coral colonies in the world, Konrad Hughen finds himself at the bottom of the ocean with a broken drill bit.