Eum Moon-seok debuted as a singer under the stage name SIC in 2005 with the album SIC 01. The following year, he released another album titled Today. In 2013, he participated in the first season of the Mnet dance survival program Dancing 9. In 2016, he expanded into acting with the short film Ahwaer. In 2017, he made a special appearance in SBS’s Whisper. In 2019, he became part of the SBS series The Fiery Priest, which won him Best New Actor at the SBS Drama Awards. In 2020, he played supporting characters in OCN’s Tell Me What You Saw and SBS’s Backstreet Rookie. In 2021, he joined the main cast of the KBS2 drama Hello, It’s Me! He also starred alongside Seo In-gook and Lee Soo-hyuk in the 2021 crime-action film Pipeline.