By: Addison Wylie Set against a bluegrass backdrop, Ellis and his best friend Neckbone (both played exceptionally by Tye Sheridan and Jacob Lofland) scavenge through their surroundings to help a wayward, disheveled man named Mud find tools to rescue a tattered boat from out of a towering tree.  As they travel back to the island where Mud (played by a striking Matthew McConaughey) roams and hides, the three work together to carry out this seemingly…