A dysfunctional household that can not seem to get alongside and get it collectively "The People We Hate at the Wedding" reluctantly reunites for a household wedding ceremony. As their many skeletons are wrenched from the closet, it seems to be simply what this singular household must reconnect.

Stephanie, a dedicated mother and popular vlogger, befriends Emily, a mysterious upper-class woman whose son Nicky attends the same school as Miles, Stephanie's son. When Emily asks her to pick Nicky up from school and then disappears, Stephanie undertakes an investigation that will dive deep into Emily's cloudy past.