A notable first for a Korean animated production, Underdog
employed a common Hollywood technique whereby voice recording was performed before the animation stage, in order to better capture the characters and their emotions in the finished product.
DOH voices the character of Moong-chi a dog who is abandoned by his owner in a forest clearing who joins a ragtag group of other abandoned pet dogs who seek shelter in a redevelopment area. Moong-chi then meets Jiang-ah, voiced by PARK So-dam
of The Priests
(2015), but her pack of wild dogs wants nothing to do with the former domesticated pets, until the encroaching development forces them to join forces in search of greener pastures.