A Holocaust survivor who escapes the concentration camps finds refuge on a secluded Delaware Beach and raises her abandoned twin grandchildren.

A teen winds up in over his head while dealing drugs with a rebellious partner in Cape Cod, Mass.

Though Kevin has evidenced 23 personalities to his trusted psychiatrist, Dr. Fletcher, there remains one still submerged who is set to materialize and dominate all the others. Compelled to abduct three teenage girls led by the willful, observant Casey, Kevin reaches a war for survival among all of those contained within him — as well as everyone around him — as the walls between his compartments shatter apart.