In a small town in French Pyrenees lives a man who literally gives a shit. Mark, an Englishman sticking to the principles of Huna, turns human waste into compost thereby reducing water pollution (a composting toilet may save more than 25k liters of water per person a year). He is truly a man of action. Aiding him in this is Ho Manchi, a volunteer social worker from Hong Kong who herself is very sensitive to the human-environment relationship.