the plot remains as guarded as a virgin with a chastity belt 
(ROOT (S (NP (DT the) (NN plot)) (VP (VBZ remains) (ADJP (ADJP (RB as) (VBN guarded)) (PP (IN as) (NP (NP (DT a) (NN virgin)) (PP (IN with) (NP (DT a) (NN chastity) (NN belt)))))))))
(ROOT (S (NP (DT ) (NN )) (VP (VBZ ) (ADJP (ADJP (RB ) (VBN )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN ) (NN )))))))))