Tracy goes into labor with her fourth child; when the heart rate of her baby slows, the midwife needs to deliver her baby quickly.

Observing Sam, her boyfriend and her mother as they cope with Sam's impending C-section.

Lisa's baby Jack must undergo medical procedures for the first few days of his life; Lisa must wait for weeks to take him home.

While Joy waits to deliver her first baby conceived via IVF, Kelly gives birth to her fifth child.

Abbie and Ross are both 17 and have been together for three years; her mom Donna, a paramedic, has delivered 15 babies, but that can't prepare her for the emotional wrench of her baby having a baby.

Two mothers are about to give birth to their first babies while two fathers are trying to work out their role in the birthing process. And the midwives reminisce about memorable births.