Lily arrives at work to an unexpected and exciting proposition. Later, Lily is forced to lie to Jack when Simone's partying gets out of hand, but how long until Jack learns the truth?

It is Lily's 30th birthday and she is determined not to celebrate it. Not only is she busy with work, but she is also keen to avoid being in the same room with Jack and Simone.

It's the morning after Lily's 30th birthday and reality is about to set in. Meanwhile, Pete and Meredith argue when Meredith wants to discuss raising their baby.