The first major story pack for Resident Evil 5 (and part of the "Alternative" initiative included in the Gold Edition of the game,) Lost in Nightmares pairs RE5 hero Chris Redfield with RE series veteran Jill Valentine for a harrowing lost chapter of the Resident Evil 5 story. Players find BSAA agent, Chris Redfield, working with his partner, Jill Valentine, as they investigate Ozwell E. Spencer's hideaway. Spencer, the evil mastermind and co-founder of Umbrella Corporation, has been hiding a new evil deep within the basement of his mansion. Chris and Jill discover this grotesque evil standing in their way as the two enter deeper into the catacombs beneath the mansion.