Meet the three families of Unexpected as they face the challenges of teen pregnancy and parenthood.

A teen mom herself, Kelsey never imagined her daughter would follow in her footsteps. Now she's about to become a grandmother.

Lilly vents to her mom how lonely she feels now that she's pregnant and her friends have moved on.

McKayla shares the details of how she grew up and what it's like being pregnant at the same time as her mom.

After a false labor scare, Kelsey realizes Lexus and her boyfriend are not prepared to be parents.

Shannon (McKayla's mom) tries to resolve her issues with Shelley (Caelan's mom) over the phone.

Disappointed by James' behavior, Lilly has dinner with her family to lift her spirits.

James gives Lilly a ring.

Lexus talks about her lack of friends, being lonely and fighting with Shayden.

McKayla has a dramatic reaction when Shelly and Shannon finally confront each other face-to-face about their feud that unfolded throughout the season.

Lexus is fifteen and about to be a mom.

McKayla's birth mom surprises everyone when she shows up to prom pictures.

James gets an education about birth and babies from his mom and sister.

Lexus has a family cookout for her 16th birthday.

McKayla en route to the hospital with her grandparents.

Surrounded by her family, Lexus deals with labor pains in the hospital.