Battle of Forever

Plot

For thousands of years, mankind had survived in leisure behind the barrier. In miniature form, men had evolved a physiology and a philosophy of peace and contemplation. Modyun was to be the first to enlarge his body to the massive proportions of ancient times and then to go out to explore the world where animal-men had established their realms. His quest was to lead him to a darkness he had never expected and an uncertain future with which humanity might not be able to cope. -- Goodreads.