Montreal is ready to celebrate.Leo is ready to forget.On the night of Game Seven, the city of Montreal explodes into a sea of hockey fever as the Canadiens are five minutes away from winning the Cup. But fifteen-year-old Leo wants nothing to do with it and is using his headphones to drown out the gasps, cheers, and Olé-Olé-Olés. The team is a painful reminder of the grief he's carried ever since his father died.Then, with minutes left in the game, Leo spots a missing black cat and follows him into the ruins of an abandoned malting factory by the canal.What he finds there is impossible. Supernatural. Extraterrestrial.There's a secret buried under the city, one that could change Montreal — and Leo — forever.As time ticks away and the whole city holds its breath, Leo discovers that the lost cats of Saint-Henri might not be all that they seem. Before the final horn sounds, Leo will have to decide whether he's ready to let go of the past.