If one was to believe that the bible is a metaphor they would have no clue what restoration means. However, if you take it all literally, except where a literal interpretation is not possible, you would come to the conclusion that God will restore repentant mankind spiritually (refering to being forgiven, sinless & in a relationship with him again) and also physically (new heavens and new earth Rev 21, the Lion & wolf lying down together Isaiah 11) during the 1000 year reign of Christ.
Also, read Romans 8:18-23. It talks about all of creation groaning for restoration.
I don't know if this is what you were looking for or not.
Tower Man