Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't let this happen to you!

It is down to the line and if you do nit come up with a good science project you can kiss you high school diploma good by. What luck a nearby abandoned military depot. You guessed it an alien engine is just waiting for the application of a little electricity.This is what happened to a young lad, Michael Harlan (John Stockwell.) With the help of his friends he discovers new dimensions. There is time enough for adventure and time enough for love Ellie (Danielle von Zerneck.) A vortex sucks up the science teacher. And everyone is threatened. Only the original hand full of friends can curb the problem by fighting their way back in over numerous obstacles to remove the source of energy to the engine.Can they curb the power before it is too late?Will we ever see the science teacher again?