The story unfolds as Lee Gi-cheol, a poor and unknown guitarist, joins the indie band 'Volcano'. Initially, Gi-cheol pushes everyone away with his cynicism and indifference, but the sincerity of Yoo-jin and the band members gradually begins to move his heart. His dormant sense of music reawakens, and Gi-cheol once again plays his guitar brilliantly on stage. However, his past does not let them go. A shadow slowly approaches Gi-cheol and Yoo-jin...