Terra and Joe are given some troubling news regarding their unborn child's health. As a result, Terra undergoes an MRI and other medical tests. Because of the results and the high risk of a little person pregnancy, the doctor makes a surprising decision about Terra's due date.

With Terra's due date moved up by over a week, it's crunch time preparing for the baby's arrival. Terra pleads with her mom to fly out for the baby's birth, but receives some disappointing news. Meanwhile Joe is making some plans of his own and decides to finally ask Terra to marry him--will she say yes?

Terra reunites with her besties Traci and Tonya to tell them about Joe's big proposal. Terra and Joe try their hardest to get everything in order before the baby arrives, but when a very pregnant Terra realizes they're not totally ready for the baby, she has a break down.

Tonya gives Terra some mommy advice to ease her nerves. With the final countdown upon them, Joe and Terra celebrate their last night alone together and anticipate how their lives will change as they set off on their new journey as parents.

Terra experiences one final meltdown in the hospital room before she is moved to the O.R. and surgery begins. Terra is immediately separated from the baby who is rushed to the NICU for treatment. While Terra recovers in the hospital, the baby’s name is finally decided.

In a series of firsts, Terra and Joe adjust to their life with the baby at home. The new little parents are exhausted and together they face many challenges, from breastfeeding to giving the baby her first bath. Joe and Terra also take the baby to her first pediatrician appointment to help understand the challenges their daughter may face.

Terra worries about having to take Penny to see a neurologist and struggles with her new role as Mom. Joe hopes a visit from his cousin Sonny will lend a helping hand, but after their task to buy a car becomes an afternoon at the bar, Terra realizes she may need professional help.

Terra still doesn't fit into any of her pre-maternity clothes and convinces Joe to make a get-fit pact. While working out, Joe reflects on all the surgeries he endured as a child and hopes Penny's impending genetics test results won't reveal a similar fate.

Terra and Joe receive the long-awaited news of Penny's genetic test results. The exhausted new parents prepare for a Sip n' See party they're hosting for friends to meet Penny. Will the main topic of conversation end up being about their baby or the guest who wasn't invited?

The pressure is on Joe to succeed at his first Mother's Day. He wants to pamper Terra, but that isn't his only challenge. Penny requires 24-hour care and an exhausted Terra begs Joe to watch Penny all by himself for the afternoon. Will this Mother's Day be one to remember, or one that sends Joe to the doghouse?

Joe's family visits and Terra storms off from a family dinner when the conversation escalates into a heated debate about religion and how they plan to raise Penny. Tension remains between Terra and Joe during their first family photo shoot and tears are shed when Joe and his mom have a heart-to-heart about Joe's deceased father

Terra and Joe are startled by some troubling news about their neighborhood and decide it's time to amp up home security. Terra rallies for the dogs to return home and Joe purchases a weapon without consulting Terra. Meanwhile, Terra and Joe struggle with a difficult medical decision as Penny's vaccination appointment nears.

Terra's brother Bourn comes to visit and the absence of Terra's mom is more noticeable than ever. The new parents try to enjoy a night out, but concern over Bourn's babysitting skills cuts dinner short. The three scheme a way for Terra's mom to finally meet Penny and decide on an impromptu trip to Texas, but Grandma is not one for surprises.

This one-hour special features interviews with the stars, Terra and Joe, and takes a look back at the most exciting moments from the season.