The novel “The Door into Summer” by Robert A. Heinlein was published for the first time in 1956 serialized in the magazine “The Magazine of Fantasy & Science Fiction” and in 1957 as a book.

Daniel Boone Davis turned to alcohol after his partner and his fiancée tricked him out of the company where he developed robot appliances. He decides to get hibernated to be awakened after thirty years with his cat Pete to be able to start again in a future he hopes will be better, but hasn’t yet settled things with 1970.

When Daniel Boone Davis goes to the headquarters of the company he’s no longer part of in the hope of a clarification, he ends up making his situation worse, and is sent into hibernation. He wakes up in the year 2000 and has to try to fix his situation, but when he starts looking for information on what happened in the years in which he was hibernated he starts discovering strange things.