flooded engine, hydrolocked and bent con-rods, engine fooked........
when you say nothing tho u mean no crank of trys to crank slowly or what... need more info but....
try turning engine over by hand using a ratchet to see if it has hydrolocked, if it has then
remove glow plugs
take off intake pipes and intercooler pipes
crank engine over to get water out
put glow plugs back in without refitting the intercooler pipes
crank engine and see if it starts
if it starts, clean out all intercooler pipes, intercooler etc... refit and try
i only say this as we had a ford galaxy in at work not so long ago, with the 1.9 tdi 150pd engine fitted and had the same happen, customer had drove through a flood and engine would not crank, (due to water in cylinders and you cannot compress water), did the above and tried it, never been back since, all we fitted to it was a new air filter
hopefully your as lucky