In Phuket Island, Thailand, the architect Paul Bellmer and his wife Jeanne lost their son Joshua in a tsunami six months ago. Jeanne is disturbed and has not accepted the loss of her beloved son. While watching some footages from Myanmar (former Burma), Jeanne is convinced that a boy wearing a Manchester United shirt in a poor village is Joshua, and Paul accepts to seek out their son in the sea gypsies camp. They hire the trafficker Thaksin Gao and they travel in the boat of master Sonchai to search Joshua. After a series of weird incidents, Sonchai leaves the trio in an abandoned village. They have to walk through the jungle where they face a journey to hell.