When Spring Comes Online
Lee Jung Do's father is a swindler and intends to resume his old habits as soon as he got out of prison even though he has promised his son to go straight. Because of his father's record, LJD had a hard time finding jobs but he overcomes these obstacles, passes law exams, and becomes a prosecutor. Oh Young Joo is a detective and her precinct is in LJD's neighborhood. Kim Joon Ki who comes from a well off family is also keen to become a prosecutor. He meets OYJ through a blind date and has continued to pursue her even though she isn't interested. Moon Chae Ri is a small time swindler who hooks up with LJD's dad in his plan to do one last job before fulfilling his promise to his son to stay out of trouble.
| Credited cast: | |||
 | Lee Han | - | Kim Joon Ki |
 | In-gi Jeong | - | Detective Moon (Chae Ri's father) (as In-Ki Jung) |
| Boo-Ja Kang | - | Restaurant grandmother |
 | Kap-su Kim | - | Lee Duk Soo(Jung Do's father) |
| Eon Lee | - | Ki Dong (as Lee Un) |
| Ha-na Lee | - | Moon Chae Ri |
 | Soon-jae Lee | - | Lee Jae Sik (Jung Do's grandfather) (as Lee Soon-jae) |
 | Keon-hyeong Park | - | Lee Jung Do |
 | Si-yeon Park | - | Oh Young Joo |
| Hyo-rim Seo | - | Hong Yi (Chae Ri's friend) |