devoid of interesting characters or even a halfway intriguing plot 
(ROOT (ADJP (JJ devoid) (PP (IN of) (NP (NP (JJ interesting) (NNS characters)) (CC or) (NP (RB even) (DT a) (ADJP (RB halfway) (JJ intriguing)) (NN plot))))))
(ROOT (ADJP (JJ ) (PP (IN ) (NP (NP (JJ ) (NNS )) (CC ) (NP (RB ) (DT ) (ADJP (RB ) (JJ )) (NN ))))))