Mo finds herself caught between pregnant patient Trixie and Derwood's overbearing mother when they are admitted as patients on the same day. Oliver's first day on AAU goes awry when his eagerness to impress causes friction between joint ward heads, Bernie and Ric. Essie struggles to discuss the birds and the bees with Parker, while Sacha runs into an old flame.

Jac's job and livelihood are at risk when a mystery patient arrives on Darwin and seeks her help. A short-staffed Keller welcomes a new face to the team. A distracted Oliver has his mind preoccupied with a special surprise for Zosia, leaving Fletch feeling overloaded.