The Three Musketeers S01E01 - First Encounter

After Park Dal Hyang has waited for five years, practising to became a soldier by passing the military exam in order to marry Yeon Soo. his first love who promised to wait for him till he passes the exam, before the exam an incident that gets him involved with three men who refuse to reveal there identities to him, which later causes a huge mess when he finds out who they really are.