《微光時代》以紀錄片形式記錄國際志工的故事，記錄青年志工在服務時所遇到的高山低谷，在熱血服務的背後又有多少對自己、對現況的省思？沒有人可以是拯救世界的超級英雄，只能「用最大的愛，做最小的事」。
《微光時代》拍攝長達三年的時間、在三個國家拍攝，製作預算的限制下卻激發了獨立製片的無限可能。片中 70%的場景沒有劉建偉導演的實際參與， 他訓練志工在海外接力進行拍攝。青年志工用自身的觀點，一點一滴記錄他們對世界的發現，也呼應了青年面對現今時代，所展現如同暗夜微光的溫柔力量。
“LET THERE BE LIGHT” documents stories of international Service Volunteers, who, during their Volunteer Service, experienced all sorts of ups and downs. The stories reflect not only their passion for services but also a self-examination to their status quo back home. In real life, no one can be the Superhero who rescues the world, but can “do small things with great love”.
The filming of “LET THERE BE LIGHT” took three years in three foreign countries. In this film, Director Awei Liu experimented a new collaboration approach and hoped to inspire an infinite possibility of independent film making under tight budget control. During the three years, he taught filming technique to Service Volunteers who did the shooting in relay during their services abroad. This film, mostly shot by non-professional Service Volunteers with no director at presence, reflected the true voices of the Youth Volunteers, a power that is going to change the world with love.
