The conflict between a group of workers and the manager as they struggle to maximize the production in a cement factory in the 60s
| Actor | Role |
|---|---|
 Mai Ngọc CănBao, worker | Bao, worker |
 Văn HòaDuoc, foreman | Duoc, foreman |
 Mạnh LinhQuyet, party secretary | Quyet, party secretary |
 Kim ThanhMay, controller | May, controller |
 Lân BíchHoa, worker | Hoa, worker |
 Minh ĐứcBien, laboratory assistant | Bien, laboratory assistant |
 Anh TháiThanh, union member | Thanh, union member |
 Tiem TonXuan, union's director | Xuan, union's director |
| MMinh TrâmMrs. Duong, Bao's mother | Mrs. Duong, Bao's mother |
| SSỹ MinhDeputy technical director | Deputy technical director |
 Đức HoànVoong's wife | Voong's wife |
 Mai ChauQuyet's wife | Quyet's wife |
 Tự HuyFactory's clerk | Factory's clerk |
| MMinh TânTechnical worker | Technical worker |