Salamander サラマンダ OVA 03 [1988] Episode 3 Gofer's Ambition

Retelling the events of Gradius II, the final episode again focuses on Lord British. As he signs a peace treaty with Gradius, Stephanie is kidnapped by the Bacterians and taken to their Artificial Sun, where they plan on turning her into a cyber brain for Gofer to lead their forces against Gradius, so Lord British and Dan join forces to rescue her and thwart the Bacterians' plans.