The most this movie has going for it is the cheese-factor. Cheese can be fun, of course, but this verges on intolerable.
Of course a mall in a flood-plain would have a grand opening the day after the big flood. Of course a sport/adventure store would be the ONLY store setting up the night before (enter the assumed "hunky hero," until the twist). Of course a snotty singer would be rehearsing in an empty mall (enter "the bitch"). Of course there would only be one security guard in a multi-million dollar, brand new mall (enter "the bumbling idiot"). And of course a killer would just happen to escape at the same time (enter "the evil doer" turning out to be...). Never mind the crooked architect who has a big secret that will help with the big finale!
It's a brilliant formula for cheese. Not all the acting is horrible, and the movie is good for a laugh. There is no suspense as it is highly predictable. Flashes to the dam, a new mall, and a prison escape? We all know where all of this will end up. Just catch it on Lifetime and don't waste any money if you REALLY want to see this.