Addison disagrees with Naomi on the designer baby methods she did for Molly and Eric Madison in order to save their 7 year old son. But when 6-month pregnant Molly decides to bring on her labor as her son's condition deteriorates it is up to Addison to save the baby and reluctantly donate the core blood to the baby's brother. Meanwhile, Cooper and Charlotte continue their behind closed doors affair and it causes him to abandon his usual annual holiday with Violet. Elsewhere, Pete asks Addison out just as Kevin comes back on the scene, Dell quits and Naomi tells Addison that the practice is in trouble which causes Sam to relieve her of administrative duties.