In the summer of 2018, Sangsangru, a three-piece Korean traditional music group that introduces themselves as ‘Korean Gypsies’, will perform on the road for a month with Taepyeongso and guitars. Their music is also welcomed abroad and makes them new friends. However, even while composing a song in an unfamiliar land and performing improvisations, the worries do not cease. The three continue to ask and answer questions about the meaning of tradition and how far music majors can be free as if taking steps. A documentary about the journey to find the sound of Sajaru Bay.