Three young Brits desperate to sort out their finances and get their lives back on track sign up to work planting thousands of trees in the vast Canadian wilderness. Despite the bugs, bears and extremes of hot and cold, a top tree-planter will put a tree in the ground every four seconds, for hours on end. Many just end up in tears. It's back-breaking, repetitive work in appalling conditions, but can Kieran, Shannon and Danny make it through to payday or will this soul-destroying job send them crying back to the UK?