Gigist stands before Supana, who was on his way to rescue Houtaro. Supana transforms into Kamen Rider Valvarad, only for Gigist to unleash the mighty Malgam, which he had created by rallying his Chemies, on Kamen Rider Valvarad!
The egg encourages Houtaro to never give up his dream, bestowing upon him a new power that can revive his Chemies and destroy Gigist. With this new power, Houtaro is determined to save his friends and get revenge on Gigist for what he has done to everyone.
[Episode summary from Kamen Rider Wiki]