the basic premise is intriguing but quickly becomes distasteful and downright creepy . 
(ROOT (S (NP (DT the) (JJ basic) (NN premise)) (VP (VP (VBZ is) (ADJP (JJ intriguing))) (CC but) (ADVP (RB quickly)) (VP (VBZ becomes) (ADJP (ADJP (JJ distasteful)) (CC and) (ADJP (RB downright) (JJ creepy))))) (. .)))
(ROOT (S (NP (DT ) (JJ ) (NN )) (VP (VP (VBZ ) (ADJP (JJ ))) (CC ) (ADVP (RB )) (VP (VBZ ) (ADJP (ADJP (JJ )) (CC ) (ADJP (RB ) (JJ ))))) (. )))