Dom returns from LA and Serena and Ric are shocked to learn that three complaints were made against him during his time there. The pair warn Dom that he needs to put in more effort. Dom's day takes a turn for the worse, when Malick's fiancé, Nathan, is admitted after being knocked off his bike. Dom and Nathan become trapped in the lift, and Dom is forced to act swiftly in order to save Nathan's life. Meanwhile, Mo treats a surrogate mother diagnosed with angina, who discovers that she needs an operation on her heart if she has a chance of surviving the birth. After struggling to find a date to her sister's wedding, Mo settles on Mr T. Mary-Claire and Harry decide to spend New Year's Eve together.