While the concept was a tidal wave in it's own right, the execution felt like it was struggling very hard to keep it's head above the water. 
The pacing was as unpredictable as the tide itself and the ending was as unsatisfying as a mouthful of salt water is to a thirsty person. 

Nonetheless even though the plot sometimes felt a bit shallow it really wasn't too bad. 
(Okay now I have run out of water jokes)