Larven der Kiefernbuschhornblattwespe und Rötelmaus, Maikäfer und Feldspitzmaus, verschiedene insektenfressende Vögel (Kleiber, Grasmücke, Meise, Rotschwanz) und Insekten, mehrere Raubinsekten mit ihren Beutetieren, wie Puppenräuber, Laufkäfer, Raubwanzen, Ameisen, Schwebfliegen und Marienkäferlarven.

The film shows insect pest and their natural predators. Typical examples mentioned are the larvae of the yellow red pine sawfly and the common redbacked mouse, the European cockchafer and the shrew, various insectivorous birds and their insect prey, such as the nuthatch, the hedge-sparrow, tit-mouse, redstart, and several predatory insects along with their prey like the European calosoma beetle, the ground beetle, a predatory bug, ants, and larvae of hover flies and lady beetles.