The Duggars are back! Watch as the family adds new life, planting trees, visits a cornmaze, and hits the speaking circuit. Later, an emotional moment occurs when Michelle and Jim Bob go in for a routine pregnancy check-up.

Mackynzie gets her first haircut. Josh and Anna provide updates on their car lot and their son Michael.

A family as big as the Duggars, the Vanderhoffs, comes to visit. Jim Bob stays home and plays host while Michelle visits her friend of 39 years. Michelle also does a speaking engagement at a Moms' meeting.

The Duggars are back to doing what the Duggars do best, serving others! In this episode, the family visits a pretzel shop and helps raise money for Alex's Lemonade Stand Foundation, an organization aimed at fighting childhood cancer.

The Duggars go to Space Camp. The family tests their strengths and skills by doing astronaut training activities such as a multi-axis trainer and flight simulator.

The Duggars meet up with some old friends and volunteer at a fish fry. Joy Anna celebrates her 14th birthday with her first driving lesson from Michelle.

Jim Bob takes his sons to Fort Rock Family Camp for a father/son campout. Before the boys leave, Joy Anna has a special treat for them.

Michelle and Jim Bob visit the obstetrician for another routine ultrasound checkup of their baby, only to receive devastating news that there had been a miscarriage.