Sunny (2011)

Na Mi fondly recalls her childhood pal Chun Hwa, who befriended her as the ostracized, new girl in school, welcoming her into a clique nicknamed “Sunny.” Together, they survive tumultuous ’80s Seoul and vow to remain together forever.
Now a housewife with an ungrateful teenage daughter and trapped in a stale marriage to a wealthy but unaffectionate husband, Na Mi long ago lost touch with the six girls from whom she was once inseparable, torn apart by circumstance.
But one day while visiting her mother at the hospital she encounters Chun Hwa, who is now terminally ill. As the two renew their relationship and reminisce, Chun Hwa implores Na Mi to bring the scattered group together one last time.
Featuring an ’80s pop hits soundtrack, this heartwarming film will alternately make you laugh and cry as these long-lost friends discover they can still change one another’s lives…
(Source: CJ Entertainment)