Billie and Tom have just lost their father. It should be a time to comfort each other, but there's always been a distance to their relationship. Determined to change this, Billie boards a flight to her brother in Paris. Dazed by grief, the siblings spend days wandering the streets, both helping and hurting each other in the process. When their explorations lead them to the infamous Paris catacombs, they will finally be forced to face the secrets lurking in their past that illuminate the questions in their present. Funny, moving and unexpected, DEEP DOWN is an empathetic and hard-hitting look at both the struggles and the joys of sibling relationships, and the realities of grieving the loss of someone who was already an absence.