Super-junaka Scott Lang in Hope Van Dyne se vračata, da nadaljujeta svoje razburljive dogodivščine kot Ant-Man in Osa. Scott Lang in Hope Van Dyne ter Hopeini starši, Hank Pym in Janet Van Dyne, ter Scottova hči Cassie Lang raziskujejo kvantno kraljestvo, kjer komunicirajo z nenavadnimi bitji in se podajo na pustolovščino, ki presega meje mogočega.
Ant lives in an typical European metropolis, and is a typical representative of the generation of young, well-educated and ambitious European women. She works for a corporation, goes to a beautician, attends yoga classes, is trying to lose some fictitious weight, watches TV, and reads tabloids. She tries her best to be a successful woman: independent, professionally fulfilled, beautiful, and happy.Unwittingly, however, she craves great love, maybe even kids and a family… Our story begins when the Ant recognises the need and decides to fall in love. Though theoretically easy, it actually appears nearly impossible.
