At 22 years old, Jenn Montooth is accepted to graduate school just as she discovers she's pregnant, and studying addiction as a neuroscientist gives Anna Miller a new perspective on her past.

When there's an explosion in the chemistry lab, graduate student Chanté Summers springs into action, and when Adriana Briscoe's professor accuses her of cheating, she scrambles to save her reputation and her spot on the biology lab's field trip.

After finally getting together in their forties, Chris Wade and his wife are determined to have a baby -- even if it means following some unconventional advice, and struggling to conceive, Sara Sweet makes her third attempt at intrauterine insemination just before her family's Christmas gathering.

A routine procedure with one of the primates in her lab becomes much more complicated when neuroscientist Paula Croxson cuts herself with the scalpel, and when surgeon Bhuvanesh Singh sees his patient back in the hospital months after what he thought was a successful surgery, he grapples with feelings of failure.

Luke Rosen signs his daughter up for a research study to find out what's causing her seizures and ends up having to fight to find the answers, and after doctors are unable to prevent her daughter's daily seizures, Tracy Dixon-Salazar decides to take matters into her own hands.