As a child, Calvin felt an affinity with the comic book character from Bill Watterson’s Calvin & Hobbes.

He was born on the day the last strip was published; his grandpa left a stuffed tiger named Hobbes in his crib; and he even had a best friend named Susie. Then Calvin’s mom washed Hobbes to death, Susie grew up beautiful and stopped talking to him, and Calvin pretty much forgot about the strip—until now. Now he is seventeen years old and has been diagnosed with schizophrenia. Hobbes is back, as a delusion, and Calvin can’t control him. Calvin decides that Watterson is the key to everything—if he would just make one more comic strip, but without Hobbes, Calvin would be cured. Calvin and Susie (is she real?) and Hobbes (he can’t be real, can he?) set out on a dangerous trek across frozen Lake Erie to track down Watterson.