It’s sink or swim time at the multiplex, and Seth Gordon’s feeble film adaptation of guilty pleasure lifeguards on the loose TV series Baywatch (C-), complete with beach-side booty and treasured chests but not much else, fails to deliver enough compelling content to stay afloat. Dwayne Johnson and Zac Efron are fine in stock roles as mismatched ocean-side officers, trading tired barbs and partaking in minor action sequences. Priyanka Chopra adds some sinister and Kelly Rohrbach some sweetness to a reed-thin plot line about a ritzy resort with a drug-dealing underground. The movie keeps its surf-ready bodies front and center but rarely scratches the surface in terms of consistent tone, wit or sentiment. It never quite settles on whether it’s a full-fledged parody, a hard-R comedy or just an action lark set in a familiar retro milieu. This is another comedic knockoff of the 21 Jump Street formula that just can’t capture magic in a bottle. Folks shouldn’t plan an adult swim or a breezy getaway expecting much out of this movie.