REFRAIN FROM EVEN MENTIONING THEM, OR YOU WILL BE BANNED. * Episode 56. An Enormous Battle Power!! Freeza's Strategy is Shattered. Reddit·r/dbz

Because of the various iterations of the franchise, "Episode 56" can refer to different storylines:

The story follows three main threads as everyone races to collect the Namekian Dragon Balls:

In the English-dubbed version of , Episode 56 is titled "Zarbon's Mission" . This episode is a critical turning point in the Frieza Saga, focusing on the high-stakes game of keep-away played by Vegeta, Krillin, and Gohan on Planet Namek. Plot Overview

After being healed in Frieza’s rejuvenation chamber, Vegeta creates a massive diversion by blowing open the ship’s ventilation shaft. In the chaos, he steals five Dragon Balls and tosses them into the Namekian wilderness to retrieve later. He then escapes Frieza’s ship by swimming underwater to avoid detection.

Dragon Ball Z - Discussion Thread! [Rewatch Week 12] : r/dbz

Far away in space, Goku is training under 50x Earth's gravity. A magnetic storm causes his ship's gravity machine to malfunction, skyrocketing the intensity to 100x gravity , which pinpoints him to the floor and leaves him unable to move. Episode 56 in Other Series