The grand opening of Hugh’s new Cardiac Clinic is upset by life-changing news from his ex-wife. Charlie’s life is thrown into disarray when her father makes a surprise visit.

Meryl and Carlito’s relationship sends shock waves through the Knight family. Tension between Hugh and Penny puts the new cardiac clinic at risk. Matt reconnects with his old high school crush.

Penny's personal feelings for Hugh spill over into the workplace, with embarrassing results. Charlie and Matt struggle to deal with an unwanted house guest. A high-profile cardiac patient causes problems for Ken and Hugh.