The exposition project of four authors (Jakub Roèek, Jakub Nìmec, Michal Žilinský, Petr Jambor) focuses on the formulation of the new scientific theory of the micro-world from the beginning of the 20th century. Quantum mechanics come with the unintuitive claims of wave and particle dualism. What's left of reality when the basic metaphysical terms that offer principial variety merge into one unitary world theory?