KJ and Dan have a hard time communicating. After several years of a strained relationship, a couple takes a weekend trip to a friend's cabin to rekindle their romance... only to find a dying, but not quite dead, mouse stuck to a sticky trap. They disagree on how to proceed, KJ advocating a quick death, while Dan suggests making the mouse's last moments as comfortable as possible. The couple agrees to a compromise and moves on, slowly finding their way to each other in this idyllic setting. Unfortunately, their tranquility is disturbed by the arrival of a small woman who can be described as "eccentric" - she is the younger sister of their host and had no idea that anyone was staying in the family cabin. No problem if it crashes, right? As the couple struggles to juggle this intruder on top of their already strained dynamic, KJ and Dan begin to worry that this obnoxious third wheel could threaten more than just their relationship...