When Saurin Choksi starts dating a neuroscientist, it challenges his assumptions about gender roles, and Wendy Suzuki's trajectory as a neuroscientist is forever altered by a passionate love affair in Paris.

Jamie Brickhouse's HIV-positive status becomes a point of tension at the dentist's office, and diagnosed with autism spectrum disorder as a child, Anders Lee struggles with this identity as an adult preparing to donate sperm.

After her mom's version of the sex talk confuses her, Khadija Aweis is determined to make sure her little brother has clarity, and when Leesha Maliakal takes on an ambitious research project designing an app for marathon spectators, her supportive dad tries to help.

When his mother his diagnosed with breast cancer, Ian has to take care of her, even though she didn't always do the best job of taking care of him, determined to make it on her own, Yaihara Fortis Santiago leaves her home in Puerto Rico for grad school, but her father still wants to protect her.

Shawn Hercules is a successful gospel radio deejay in Barbados, but he dreams of a different kind of life in science, and Emma Young feels ready for her first real job in science, surveying northern spotted owls, until she encounters some unexpected fears.