Where On Earth??(거기가 어딘데??)

Ji Jin Hee, Cha Tae Hyun, Cho Sae Ho, and Bae Jung Nam set off to the Arabian Desert where they have to find their own route to the Arabian Sea. They walk 45km in the scorching desert heat with limited resources. Each member finds and plays his own role to boost morale. Will they be able to make it?