Complete Unknown

When Tom (Michael Shannon) and his wife host a dinner party to celebrate his birthday, one of their guests brings an intriguing date named Alice (Rachel Weisz). Tom is convinced he knows her, but she refuses to acknowledge their past history. When Alice makes a hasty exit, Tom follows. What ensues is an all-night odyssey with two characters, one needing to make a change in his life, the other questioning how to stop changing.