The first Young Investigator Forum took place on 5 September 2023 from in the new Centre for Life Science Plasma Technology in Greifswald under the title: "Our immune system and the rest of the world". Many young scientists from Greifswald, who are researching the interactions of the immune system with other organ systems (e.g. respiratory tract, digestive tract, brain, skin, joints and metabolism), took the opportunity to network and discuss possible collaborations and project ideas.