After her husband's abrupt death, a woman seeks solace with her in-laws. As they transform into Deadites one by one, she comes to discover that the vows she took in life survive even in death.

Mia, a drug addict, is determined to kick the habit. To that end, she asks her brother, David, his girlfriend, Natalie and their friends Olivia and Eric to accompany her to their family's remote ...