One hour and fourteen minutes later, the chicken is dead (by a steamroller), Rex is cursed (by the Grim Reaper), and wild animals are haunting Rex's room (hounding him for answers). Even his best friend Darvish is not going to believe this, and that kid believes everything.

Rex's uninvited ghostly guests are a chatty, messy bunch. And they need Rex to solve their mysterious deadly departures from the Middling Falls Zoo before it happens again. But how?