None of the characters ever existed, nor did any of their backstories, nothing they did ever occurred, and every detail served no purpose in knowing because why? None of it ever happened. They were all characters invented in a dream. It's basically another way of writing something weak and meaningless and then throwing it in the trash.
The story moves so gracefully, ethereally and mysteriously, creating a fascinating journey. However, the last minutes - I mean, the reveal - are a disregard towards the realms it previously created. Not to be conceited, but the theories I formulated seemed more plausible and/or interesting. It was a pity.
Simply put, one of the best films ever made despite having been ignored by audiences and film critics. It's an incredibly clever film with an extremely well thought-out execution and the way it was shot and edited, along with the marvelous soundtrack, make it a mesmerizing experience with great rewatch value.
Despite a somewhat flimsy conclusion, "Stay" is a well-acted, enigmatic mirage of a film. The versatile editing techniques employed here allow it seamless and free-flowing qualities while also jarring and occasionally uncomfortable ones. A fresh, affecting tale of survivor's guilt and solid psychological thriller fare.