This episode is all about the art of photography and its evolution over time. It focuses on the photographic archive of Petros Poulidis, highlighting the wide range of subjects he covered and the historical importance of his work.

Alkis Xanthakis, a historian of photography and director of the AKTO Photography School, talks about Poulidis’ early years, his studies, his move to Athens, and his first photography studio. He describes him as “Greece’s first photojournalist” and praises his contribution to the field.

Christos Poulidis, Petros’ son, takes us through his father's workshop, showing us original photographs that cover a wide range of topics, from political and social events to religious, cultural, and sports milestones of the 20th century.

These photographs capture significant moments in Greece’s history, shedding light on important events and enriching our collective memory. The episode also features journalists, writers, and historians who compare the workings of old and new cameras and discuss the role of photographers, photojournalism, and the different types of photography.

Giorgos Poulidis, Petros' grandson, shares personal memories of his grandfather and talks about his father's professionalism, who also became a photographer.

Finally, Kyriaki Arsenis, historian and director of the ERT Archive-Museum, discusses the important and challenging task of preserving and restoring this historical archive so that it remains intact for future generations to enjoy.

Throughout the episode, we see a variety of photographs by Petros and Christos Poulidis, capturing key moments from the Interwar period, the Greco-Albanian War, the Occupation, and the Post-Dictatorship era.