Just yesterday, Agatha was tied to the other children at the college, her every move watched persistently but carefully by a mistress. But today, after falling into the water, her life has changed dramatically. Now she is considered dangerous, infected, and forced into hiding. The old world repulses Agatha, but the mysterious waters of Venisana beckon. How does this terrifying, incomprehensible city work, whose fate depends on the decision of one girl?