Years ago, Janet Van Dyme, the original Wasp, shrank to a level so small that there was no way for her to return to normal size. As such, she was presumed dead, and her husband and daughter went on without her. Now, though, there’s some (tenuous) evidence to suggest that she may still be alive, and trying to get back to the real world. So it’s up to Hank, Hope, and, of course, Scott, to shrink down, and find their missing teammate. But it won’t be easy, since there’s a gangster, an FBI agent, and a super villain with the power to walk through walls coming after them for various, somewhat silly, reasons.