An awkward run-in with her former best friend and her ex inspires Sam to own up to her past mistakes, both emotionally and financially. Meanwhile, as she resets her relationship with her mom, Sam is horrified to learn Carol is dating.

Sam faces her hardest challenge yet: avoiding alcohol on St. Patrick's Day in Boston. Brit gives Sam an unexpected chance to rekindle their friendship. James and Mindy track down his lost keys while battling St. Patrick's Day temptations.