Traveling businessman David Mann angers the driver of a rusty tanker while crossing the California desert. A simple trip turns deadly, as Mann struggles to stay on the road while the tanker plays cat and mouse with his life.

Rei is a freelance writer embattled by personal demons. She hears voices in her head, and has sleeping problems, eating disorders and drinks excessively. On Valentine's Day, she meets truck driver Takatoshi. She joins him on a journey in his bumpy and shaky truck - which vibrates in tune with her uneasy soul.