Sentence:  The <WSD>hook</WSD> of Good Boys, Hollywood's latest odyssey of comic adolescent mischief, is that the kids behaving badly are, for once, truly kids. 
Meaning of the word marked with <WSD> tags:  A gimmick or element of a creative work intended to be attention-grabbing for the audience; a compelling idea for a story that will be sure to attract people's attention.