Ant-man Scott Long (Paul Rudd) was grounded by the FBI for siding with Captain America in the "Civil War". Seeing that there were still a few days away from true freedom, trouble came to me. It turns out that the original ant-man Hank Pym (Michael Douglas) found through research that his wife, the Wasp Girl (Michelle Pfeiffer), must still be living in the quantum field, and Scott is the only hope he can bring his wife back to the real world. Without any explanation, Hank's daughter Hope (Evangeline Nicole Lilly) takes Scott out of the room. Shortly after that, they not only had to avoid the FBI's entanglement, but also had to guard against attacks from mysterious forces. The emergence of "ghosts" brought Scott and others into unprecedented chaos. Can Scott gain freedom smoothly? Is the first generation of wasp women still alive somewhere in the quantum realm?