Resident Evil: Gaiden

The game introduces an underground organization formed to put an end to the global operations of the Umbrella Corporation , the corporate entity responsible for the Raccoon City disaster. Leon S. Kennedy , one of the protagonists of Resident Evil 2 , joined the initiative and received orders to investigate the luxurious ocean cruiser, the Starlight , rumored to be carrying a new type of bio-organic weapon (BOW) developed by Umbrella. However, the organization’s headquarters lose contact with Leon soon after he boards the ship; Barry Burton , a supporting character from the original Resident Evil , is sent in to find out Leon’s whereabouts.

After discovering that the crew and the passengers on the ship have turned into zombies, Barry comes across an orphan girl named Lucia, who can sense the presence of Umbrella’s new BOW and also possesses some other mysterious abilities, which makes Barry suspicious of her origins. Lucia is later kidnapped by the BOW, but Barry reunites with Leon; working together, they defeat the BOW and save Lucia. Headquarters inform Barry that the BOW is supposed to have green blood. Soon after, the Starlight is rocked by a powerful explosion which sets part of the ship on fire.

The group split up; Leon and Lucia activate the sprinkler system to prevent the fire from reaching the engine room. However, the two overhear Barry communicating with Umbrella to arrange some sort of an exchange. Their suspicions are confirmed upon meeting him again: holding Leon at gunpoint, Barry kidnaps Lucia and boards an Umbrella submarine with her. A second explosion hits the Starlight , and Leon makes his way to the engine room to investigate its source.

He finds out that the BOW has destroyed the fuel converter in an attempt to blow up the ship. Leon successfully fights the monster off, but realizes that damage done to the ship is too severe. Aboard the Umbrella submarine, Barry reveals to the sub’s captain that he only pretended to abduct Lucia to trick Umbrella into evacuating them off the Starlight , having figured out that the company is actually interested in a different BOW – a genetically engineered parasite growing inside of Lucia, expected to brutally emerge from the girl within ten days. Barry forces the surgeons on board to surgically remove the parasite from the Lucia, and the operation is a success.

However, despite its incomplete development, the parasite is able to break through the containment glass and attacks the sub’s captain, “draining the life from him” and turning him into a zombie. The parasite escapes, quickly turning the whole crew into zombies, and rapidly matures into a large, monstrous BOW. Barry and Lucia navigate the submarine back to the Starlight and board it in order to rescue Leon, but the BOW manages to board the sinking ship ahead of them. Although they quickly discover what appears to be Leon, the two find out that the BOW is actually a shape-shifter and that it has assumed the form of their partner.

They escape and come across another Leon in the engine room, who Barry believes to be the real one. Together, the three go back to the deck, where the BOW pulls Lucia into the sea. Barry rescues her, only for another Lucia to appear right behind them. The real girl grabs a knife and cuts her hand to show her red blood, confirming her identity.

The group then defeat the BOW in one last battle and board the Umbrella submarine as the Starlight sinks. Lucia, having lost her mysterious powers following the parasite’s extraction, is offered to live with Barry’s family. In the game’s final shot before the credits, Leon’s neck is shown bleeding green blood, revealing him to be the BOW in disguise, which Lucia is now unable to sense. The fate of the real Leon is uncertain, but it is possible he died.