Saga of the Heart of the Dragon. Book 1. Other Souls

It seemed that the world could not be saved: the Dragon Heart, capable of preventing a catastrophe, was stolen, its creator was killed, and Ryan Mercury, the only one who knows about the danger, ended up in the Aztecology clinic... and does not remember anything about himself or about the mysterious artifact. Not only does he not remember - Thomas Roxborough, hoping to get a new beautiful body, tried to transfer his soul into Ryan, and now two memories are closely intertwined in him.
But it’s not the first time for those running in the shadows to come out of a complete daze, right, Chummer? Neither cyberzombies nor blood mages will stop you if a beautiful elf is in love with you, and your reliable team of runners will get through any level of defense. But whose side will a person choose, who has obeyed orders all his life, and now finds himself on his own, and even with someone else’s baggage of memories?