Berserk Golden Age Arc I: Egg of the Supreme Ruler (ベルセルク 黄金時代篇Ⅰ 覇王の卵 Berserk Ougon Jidaihen I: Haou no Tamago) is the first movie in a trilogy of films adapting the Golden Age Arc from the popular manga series Berserk.
The movie covers the portion of the Golden Age Arc from Guts' first encounter with the Band of the Falcon to Griffith telling Charlotte of his views on friendship, with the following differences to the manga:
Guts enters the castle through a siege tower and is shown quickly leaping ahead of the pack.
While Casca and Corkus discuss the flow of the battle, Guts takes a quick look in Griffith's direction before turning back to the battlefield. This action appears to affect Griffith to some extent.
Guts' first battle as a member of the Falcons is not included.
When both Griffith and Guts rush in for a joint attack on Zodd, Guts only damages his arm as opposed to severing it, skipping when Zodd demonstrates his ability to reattach severed limbs.
Guts never tries to visit Griffith after he wakes up from the battle with Zodd. Instead, the following scene involves Guts cutting at the air in frustration and a crippled Griffith interrupting him.