Finding an official script for the first episode of Arcane can be challenging, as the full, formatted screenplay is not typically released for the Netflix series. However, you can access detailed, unofficial transcripts for "Welcome to the Playground" to study the show's, masterful, dialogue-heavy, and action-oriented writing style.

The League of Legends Wiki (Fandom) contains a detailed "Plot" section for Episode 1.

The episode also establishes the world of Runeterra, specifically the undercity of Zaun and the contrast with Piltover. The animation and music work together to create a gritty, immersive atmosphere that draws the viewer in.