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500 years ago, a very great alchemist found a grimoire which he managed to exploit. The legend says that he would have, among other things, found the formula of eternal life. Since then, no one has heard of him, his laboratory has never been discovered and his house will be destroyed in 1 hour. It's now or never, you have to go now, discover the secret entrance to his laboratory to understand what happened to him and find the grimoire.