Very weak plot

Rating: 4/10 (8 October 2002)

Even though this movie might have its merits, what's most frustrating about it is its weak plot, which has a gaping hole in it.
SPOILER
So these aliens are supposed to be very advanced. They are capable of setting up an efficient navigation system (the circles), have advanced means of transportation (UFOs that can even become invisible), and are clever enough to send some scouts ahead to check out the place before sending over an army of aliens.
Now this is where the problem lies. These scouts will surely have found out that they are vulnerable to water. They will also have noticed that on this planet water is basically every where. These aliens melt when it rains! Why would the scouts tell the others to come to earth, knowing that they are so vulnerable? Why didn't the aliens raid outdoor-stores and wear rain suits for protection? Or develop some efficient protection system against water touching their bodies? For intelligent beings from another world they seem pretty stupid to me.
A nicely made movie, but a ludicrous plot.