: Gowasu introduces the Time Rings , explaining how they are used to observe the flow of time.
The emotional core of the episode is the sparring match between and Vegeta . Fresh off his defeat by Goku Black , Trunks is grappling with a sense of inadequacy. Dragon Ball Super (Dub) Episode 54
Parallel to the training on Earth, the episode takes us to , where the relationship between Gowasu and his apprentice Zamasu is becoming increasingly strained. : Gowasu introduces the Time Rings , explaining