The Standard Model of particle physics has been structurally completed with the discovery of the Higgs boson, and it has been tested at the quantum level to great accuracy. However, open puzzles remain, among which are e.g. the nature of Dark Matter and the explanation of the observed baryon-antibaryon asymmetry of the universe. Furthermore, to date the inclusion of gravity together with the other three fundamental forces into one consistent quantum field theory failed. The workshop aims at discussing these open questions from various angles, with the topics covering LHC phenomenology, Dark Matter experiments, baryogengesis, gravitational waves, and black hole physics. The broad range of discussion themes centered around our open questions may initiate new ideas and research directions to follow.