When planning her cousin's wedding goes awry, Jess turns to an unexpected source-her mother, Megan-for help. An O'Brien family wedding has some unexpected tension when Mick is confronted by an adversary from his past.
Jess and David host visitors in town for the traditional Snallygaster hunt. Meanwhile, Mick and Thomas revisit a weekend-long hiking trip from their youth.
Trace discovers that the general manager of The Bridge stole large sums of money; Abby realizes that she can't be a perfect boss, parent and girlfriend; David Peck's sister arrives, threatening Jess and David's relationship.
