At night a couple named Steve Andrews (Steve McQueen) and Jane Martin (Aneta Corsaut) are out on their convertible having a romantic time to themselves and spot a meteorite lands nearby with a jelly creature of some sort hiding inside in which an old man living in the woods spots and pokes it with a stick. Suddenly this creature attacks the old man's arm and he's in pain as Steve and Jane spot him and tries to help him and takes him to Dr. Hallen (Alden 'Stephen' Chase) in which he tells Steve to try and find the location where he got this thing on his hand.
Suddenly this jelly eats the old man and turns into a blob sort of object killing both him and his his nurse which Steve and Jane witnesses and tries to warn the town about this thing invading and trying to kill everyone but the locals don't believe him as this blob swallows many of the locals becoming bigger and bigger so it's up to both Steve and Jane to find a way to stop this thing from growing any bigger but don't know how to.

The story is in terrific taste showing a nice beginning with both characters Steve Andrews and Jane Martin having a discussion together sitting on the top seat of their convertable looking like a convincing teenage couple.
We have great shots on an old man leaving his cabin in the woods to take a look at the meteor that landed near his area with a perfect close up shot on the meteor and him poking it with a stick along with it crumbling into a gooey object. There's also a good shot on the goo oozing down the sick and reaching his arm as he does well howling in pain trying to get it off.
We spot a great discussion sequence between Steve and Tony Gressette daring to race one another on the road once the light turned green as the setting looked perfect as two rebellious teenagers during that time era.
A perfect shot on the goo now forming into a bigger blob object rolling on the floor in the doctors office with both a doctor and nurse looking believeably shocked and scared while trying to find some way of destroying it. The nurse does well at being cornered and acting more frightening than ever since the scene packed a good suspense with that moment wondering if she will survive or not.
There's a nice scene with the doctor being covered by the blob while nearly crashing through a window as the camera shot looked impressive with Steve looking shocked.
We spot a great discussion between two siblings which looked touching and telling him to keep guard for their parents while she goes out to try and help the city. It was set out like you'd picture in a Disney movie.
There's a good scene between Steve and Jane searching around an empty dark supermarket with a good shot on the blob heading towards Jane with her screaming. There's also a good shot on the two of them in a freezer department and the blob trying to ooze under a door and then backing off.
There's a good moment with Steve and Jane warning others like Tony at a movie theater about the object terrorising the city with them laughing like typical teenagers.
A nice shot on the blob oozing through a vent of the theatre room projector and attacking anything in site along with it oozing through the window where the projector is and spilling down the walls.
Many good shots on people screaming and running in the city with the blob growing in the city area as well as police and army people trying to find some way of battling it.
Bottom line: The true drive-in classic that terrified viewers to watch and tons of fun too with good effects on this goo just growing and growing and invading the small town. Yet, you wonder how this blob came to be from that comet or if it was from another planet to top it all off. Still there's nonstop action throughout the story.
There are some touching moments in the story as well as your everyday teenagers having a good time with car chasing and watching a good movie at their theatre during the night time moments like you'd want to be part of the fun.
We also spot the real cringing moments when the people are cornered by this blob which makes you wonder if they will be rescued or not.
If you love old fashioned 50's horror films then this movie without a doubt is for you to join your friends and be overrly entertained in which this one inspired almost two decades later a sequel and then during the late 80's a remake too which is nowhere as good.

The acting is very good during it's time as Steve McQueen (Steve Andrews) in one of his first movie roles playing the heroic type in the film and does well with his typical but charming boy next door attitude and charm. He brought alot of energy and character to his role in the film.
Aneta Corsaut (Jane Martin) has the perfect looks as his girlfriend with the pretty face and everything else and knew how to scream too so she passes for the part. She does well almost going into hysterics while nearly being attacked by the blob.
George Karas (Officer Ritchie) played the part very well as the local police officer with his seriousness and sympathetic attitude as well as getting stern when he had to.
Robert Fields (Tony Gressette) stood out greatly as the macho type of teen just really in your face type of character which really works for the story as he made sure he portrayed it just for the movie too.

The music was perfectly well composed with that great 50's suspenseful sounds with the sharp violing playing along with the romantic music too when the teenage couple try to risk their lives for others. There's many other classical sounds too with the trombone playing and some drum beats too all done by Ralph Carmichael.

Dr. T. Hallen: [on the phone] Kate? It's Dr. Hallen, I'm still at the office... something's come up, I need you back here right away. No you've got to come back, Kate, there's a man here with some sort of a parasite on his arm, assimilating his flesh at a frightening speed. I may have to get ahead of it and amputate. No... I don't know what it is or where it came from.

[after throwing acid on the Blob]
Kate, the nurse: Doctor, nothing will stop it!

Steve Andrews: Dad, it isn't vandalism! Doctor Hallen is dead and he was killed by some sort of a monster! Now I know, because I saw it, Dad.

Henry Martin: Well then young lady, do you mind telling me where you've been spending the evening?
Jane Martin: Daddy, it's all right.
Henry Martin: [sarcastically] Oh yes, everything's fine, I always stop by the police station in the middle of the night to pick up my daughter. Don't you realize that by morning this will be all over town?
Jane Martin: Well we were just trying to warn people.
Henry Martin: After all I am the principal at the high school.
[to Steve]
Henry Martin: Young man this is the last time you'll going to take my daughter out!
Jane Martin: Steve didn't do anything wrong!

Tony Gressette: All right Steve, you made us waste our 80 cents, now what gives?
[all the teenagers demand to know what's going on]
Steve Andrews: Would you believe me if I told you there was something inside of that rock we found tonight? Something that could wipe out this whole town?
Tony Gressette: [all the teenagers laugh] Hey knock it off! Go ahead, Steve.
Steve Andrews: I saw this thing kill Doc Hallen tonight.
[all the kids are shocked]
Steve Andrews: That's right.
Tony Gressette: What is it?
Steve Andrews: I don't know, but one thing's for certain, if it can kill Doctor Hallen it can kill somebody else.
Al: Well what do you want us to do, Steve?
Steve Andrews: Allright, we're going to find this thing, and we're going to make people believe us.

Steve Andrews: [trying to get everybody's attention] Listen, now listen to me everybody, this town is in danger, now several people have been killed already! Now we, we had to make this noise so you would listen to us, so we could warn you!
Man: If we're in trouble, where're the police?
Sgt. Jim Bert: [sees Steve] You, boy this time you really hung yourself.
Steve Andrews: Now look Sarge, just give me a chance to talk to them, that's all.
Sgt. Jim Bert: I don't know what kind of stunt it is you're pulling here, but whatever it is it's going to stop right now!
Officer Ritchie: Here comes Dave!
Lieutenant Dave: What's going on here, Jim? Steve!
Steve Andrews: Dave, make them listen to me. There IS a monster, we saw it again at dad's store, and it's bigger now!
Sgt. Jim Bert: Your story's gotten bigger now kid.
Steve Andrews: Dave, look at me! Do I look like somebody's playing a practical joke? Am I laughing? Or am I scared stiff?
Lieutenant Dave: He's telling the truth.