A spiritual fantasy that hides the key to interdimensional travel... In the year 1896, a young woman finds herself standing in a river, not remembering where she came from or who she is. The only link to her past is a bag that contains a few symbolic objects. Followed by a cloaked figure, she ends up in Prague's Jewish Town, where she feels at home. With the help of her new friends and occasional flashbacks, she begins to unravel her past connection to esotery, magic, and places that initially seem unreal. One day, she meets a young man whom she recognizes as her best friend. Through their mutual memories, they discover that their origins are stranger than they thought and that the mysterious concept of the Merkaba hides the key to their past and future. The novel is inspired by the author's esoteric background and hometown Prague whose name means threshold. The idea of Prague being a threshold to other realms had been explored in various literary works in the past, especially in Gustav Meyrink's Golem, which influenced this story as well. Each chapter is symbolically and archetypically aligned with one of the Tarot's Major Arcana trumps that help unveil the mystery of the Merkaba.