Steve and Jane are cornered by The Blob in the grocery store. They seek refuge in the walk-in refrigerator. The Blob tries to ooze in under the door. It retreats. Steve and Jane escape. They set off the town's fire and air-raid alarms. The Blob enters the movie theatre. The customers run away screaming. The Blob oozes out of the theater. Jane's little brother runs into a diner. Jane and Steve follow him. They become trapped in the diner along with the owner and a waitress.