In Beating Cells: The sun is setting on couples Rico and Eva and Friedrich and Julia's forest road trip. Tight bonds have formed across the group, none more so than between free-spirited Rico and vertical thinker Friedrich, who is coming to terms with a side of his sexuality that had previously remained in the shadows. As the foursome drink, party, swim and while away the hours by a picturesque lake, the food supplies dwindle, and the sheen starts to come off their idyllic escape.