B4S will begin with a "memorable" night of two groups of close friends at a bar. And then, the audience will be able to follow each person's love story on that "fateful night".
| Actor | Role |
|---|---|
 Jun VũNot listed | Not listed |
| TTôn Kinh LâmNot listed | Not listed |
 Việt HưngNot listed | Not listed |
 Hoàng Yến ChibiNot listed | Not listed |
 Ma Ran ĐôNot listed | Not listed |