The Corpse's Whisper

A middle-aged woman gets trapped in an alternate universe, after falling asleep at a friend's house. She believes that she was in a plane crash but after a couple of days on the island, she starts to hear a voice that talks to her in her dreams.

In the end, there are 4 voices that come along on the 4 islands, but what happens when the middle-aged woman falls in love with one of the voices.