A claustrophobic journey into spaces never seen before. ‘The Tough’ carries a lot of meanings: defiant, vicious, resistant, relentless, strong, resilient, cold, hard. The explorer has reason to choose this name for his discovery - a place deep below snowy ground. And why? The unknown stirs his imagination, pushes him forward. The camera follows him, step by step, taking part in the exploration of the spaces which more and more fiercely resist the delicate human shape.