Amöbe. Schlüpfen aus einer Zyste. Fortbewegung, Umfließen eines Bakteriums und dessen Auflösen in einer Nahrungsvakuole. Verschiedene Phasen der Kern- und Zellteilung. Enzystierung der Amöbe. Mit Zeitraffung.

Hartmannella castellanii belongs to the so-called "limax amoebae". It is capable of encysting. After the amoeba's hatching from the cyst, we can watch its locomotion. During phagocytosis of bacteria of different sizes, the dissolving (Iysis) of the bacteria in the food vacuoles can be observed. After showing nuclear and cellular division, the film concludes with shots of the encystment.