Monsters attack. Kids fight them.
This has to be the most incompetent introductory episode I have ever seen.
We start off with several minutes of zero animation as a narrator explains terminology. We are literally presented with cardboard character cutouts over a background. Then an extra character fades in (they don’t even bother changing shots or animating any thing). The narrator a says “A mysterious group drove off the invaders and delivered a message.” Then there is a pause, the additional character fades in, and says the message. Without even moving his lips.
This is representative of the rest of the episode as well.
Clearly whoever made this has no hopes or dreams whatsoever. They aren’t even trying.