Plot Summary

Inconceivable unfolds as a psychological domestic thriller centered on Angela’s attempt to expand her family. Angela and her husband Brian live a seemingly content life with their daughter Cora when they befriend Katie, a mysterious young woman who has recently moved into the neighborhood. Initially trusting and warm toward Katie — even offering her a role as babysitter and considering her as a surrogate option — Angela soon discovers that Katie harbors troubling secrets. As Katie’s presence in their household deepens, unsettling behavior and hidden motives begin to surface. What starts as a promising friendship gradually morphs into a threatening psychological ordeal, forcing Angela and Brian to confront the dangerous reality behind Katie’s façade as their family’s safety and trust unravel.