Three musicians play a mad piece in 7/8, trapped under the spell of the number 7. Playing passionately together, each musician is possessed by 7 in a different way. Who can tell what is real and what is not?
| Actor | Role |
|---|---|
| MMiha FerkSaxophonist (Trio Klavis) | Saxophonist (Trio Klavis) |
| JJenny LipplViolinist (Trio Klavis) | Violinist (Trio Klavis) |
| HHyung-Ki JooRunning Man | Running Man |