Island of the Hungry Ghosts

The Australian territory of Christmas Island is inhabited by migratory crabs travelling from the jungle to the ocean, in a movement that has been provoked by the full moon for thousands of years. Poh Lin Lee is a "trauma therapist" who lives with her family in this seemingly idyllic paradise. Every day, she talks with the asylum seekers held indefinitely in a high-security detention centre, attempting to support them in a situation that is as unbearable as its outcome is uncertain (imdb)