Domino Effect 3 Sink or Swim is a story about Kelly Alderson; the wife of Danny Alderson from Domino Effect 2 Grab Death by the Horns, and Kelly's son Brad Alderson. Kelly has a premonition of the Oakstown tunnel caving in as they were about to go in it. She then warns her son along with 10 other people about what will happen. One of those people include Joe Freeman; father of Bobby Freeman from Domino Effect 2. The pressure from Hurricane Irenabel, mixture of Hurricane Irene and Hurricane Isabel that both hit Richmond, Virginia, causes the tunnel to cave in, but all the people Kelly warns are saved as they all listen to her, run away from their cars, and run out of the tunnel as it caves in. A year later all of those people start to die off one by one in many gruesome accidents which cause those people to die. Kelly tries to warn all those people about what will happen to them but they don't listen to her and end up dying later on in bizarre accidents.