Sam, an 18-year-old on the autism spectrum, decides it's time to find a girlfriend, a journey that sets Sam's mom on her own life-changing path as her son seeks more independence.
Interested in having a girlfriend, Sam researches dating advice and puts it to the test. Meanwhile, his overprotective mom Elsa must learn to let go.
When Sam learns his crush is already taken, dad Doug helps him woo her. A lost credit card sends Elsa back to the bar. Casey hears rumors about Evan.
Sam decides to update his look. Casey learns a family secret. Feeling like her family no longer needs her, Elsa seeks attention elsewhere.
When a classmate shows interest in him, Sam makes a list of pros and cons to see whether she's girlfriend material. Casey gets a prestigious offer.
Sam becomes rattled after Paige invades his bedroom. Casey visits Clayton Prep and gets a taste of what life away from her brother would be like.
Paige proposes having an autism-friendly school dance to the PTA. Sam makes preparations for losing his virginity. Doug and Julia help each other.
When Paige makes a confession to Sam, he creates a checklist to figure how he feels. Things with Nick suddenly get too real for Elsa.
After a disastrous dinner with Paige's family, Sam makes amends at the school dance. Casey's fury at her mom affects her relationship with Evan.