Former lovers Marie and Mark put on a united front to be the best parents they can be, as they look forward to the arrival of their third child together. Brazilian first-time mum Caia is focused on a natural birth, but her partner Bernardo's outbreak... (more) of 'man flu' is an unforeseen distraction for the midwife. Childhood sweethearts Tom and Kate put their squabbling aside for the birth of their second baby.