The Johnstons are back with some big life events on the horizon. Trent seeks answers for his ongoing health issues, Liz re-enters the dating scene with Emma not too far behind and Anna is unsure about leaving home after graduation.

Inspired by the upcoming mud run, Liz and Emma make masks for the family. Jonah gives Trent and Amber devastating news and Trent gets his scan results back.

The Johnstons pursue their family history with the help of a genealogist and get some unexpected results. Jonah deals with the fallout from being kicked out of college, while Trent and Amber turn to a professional for help.

Emma is signed up to work at a kids' camp and sees a speech therapist to discuss her trouble speaking in public. Meanwhile, the family gets a new puppy.

The Johnstons camp out in the backyard while renovations are underway, and Amber decides to make the family go tech-free by locking everyone's phone away for the weekend. Can five teenagers survive without technology or is someone going to crack?

Before the Johnstons attend their annual little people's conference in San Francisco, Trent and Amber decide to start the trip in San Diego drive up in an RV. Everyone is excited for the destination, but can they survive a week in an RV together?

The Johnston kids enjoy a week in San Francisco for their annual little people's conference where Emma reunites with her bff Lucca and Anna finds herself a date, but trouble arises when the family is heckled in public.

The family is back home from their two week California vacation and the start of the school year is approaching fast. Anna breaks down as she prepares to start college, and Trent & Amber worry Liz is getting too hot and heavy with her new boyfriend.

School is back in session, with mixed feelings from the kids. Alex and Emma dress up as historical characters for a social studies project while Jonah's new college schedule worries Trent.