He said he'd never use the Time Machine again, but when a Great Sporting Moment happens, what is a boy to do? Unfortunately, Jack's not the only Jack to think of that, and suddenly he's no longer in the same world. The new one may look identical, but our man doesn't have the ame relationship with this world's Alison as he does with the one back home. Will Roland - either Roland - get him out of it in time?