Two school troublemakers decide to become better students. They visit their suspicious teacher everyday after school to ask questions and offer help. When their teacher falls ill due to overwork and is hospitalized, they decide they must find a way to show their appreciation.
| Actor | Role |
|---|---|
 Lee Seung-hyunJang Da-ri | Jang Da-ri |
 Kim Jung-hoonNot listed | Not listed |
 Jun WoonNot listed | Not listed |
 Kang Nam-gilNot listed | Not listed |
| JJo Yeong-sukNot listed | Not listed |
| LLee CheolNot listed | Not listed |
| HHan Ju-yeolNot listed | Not listed |
| KKim Suk-gyeongNot listed | Not listed |
 Kim UngNot listed | Not listed |
| KKim Gi-jongNot listed | Not listed |
| KKim Min-gyuNot listed | Not listed |
 Mun Mi-bongNot listed | Not listed |
| SSok In-sooNot listed | Not listed |
| SSung Moung-sunNot listed | Not listed |
| KKim So-jeNot listed | Not listed |