AHA. is a travel and science themed series, in which the Croatian actor Ivan Djuricic travels and meets scientists from Croatia, who work at universities and institutes abroad. In their company, he discovers the cities they live in, the cities that shaped them as people. Discovering their life stories, he seeks the moment of revelation in life, the "Aha!" moment. In the first season, we meet Drazen Prelec in Boston, Nedjeljka Zagar in Hamburg, Ana-Suncana Smith in Erlangen and Iva Ridjan Skov in Copenhagen. Through the lens of themes such as curiosity, motivation, intuition, cooperation and heritage, this series reveals the science world and imposes some important questions regarding our future.