'How to Love a Rat' takes place in a Cambodian minefield. Working amid hidden bombs, former war combatants use explosive-sniffing rats to clear mines from the land. In total, an estimated four to six million landmines in Cambodia have been left behind by wars that ended decades ago. This has created the conditions for a flourishing mine-clearance industry, where workers who were once enemy combatants may now be employed on the same clearance teams.