If you found a horseshoe for luck, it means that someone else recently kicked the bucket! Lyusa Lyutikova needs three things to be happy: more candies, her beloved cat Paisa on her lap, and for police captain Ruslan Suprotkin to finally understand that it is she, Lucy is the girl of his dreams. Alas! The cat is driven out of the house by Lucy’s impudent cousin, and a maniac is clearly operating at the chocolate factory, filling sweets with arsenic. In fact, Ruslan considers the dear owner of the cat shelter to be a poisoner, but Lyusya would rather believe in a maniac! And she will do everything to acquit an innocent person. Maybe at least then Ruslan’s stone heart will tremble?..