<P> At first, the other men in the cell, led by gang leader So Yang - ho, do not take kindly to Yong - go after reading in his file that he murdered and molested a child . However, when Yong - go saves Yang - ho from being fatally stabbed by a rival gang leader, Yang - ho repays the favor by smuggling Ye - seung into Cell No. 7 . The Cell No. 7 inmates slowly befriend Yong - go and believe that he is a good man who just happened to be in the wrong place at the wrong time . They help Yong - go rehearse his trial . Eventually, even the head prison warden, Jang Min - hwan, who is initially harsh to Yong - go but softens up when the latter saves him from an arson attack, realizes that Yong - go is merely cornered into admitting a false guilt . He takes custody of Ye - seung and allows her to visit her father every afternoon . </P> <P> However, the police commissioner threatens Yong - go with Ye - seung's safety if he does not confess his "crime" during his trial and earn the capital punishment . He ultimately chooses to sacrifice himself by giving in, receiving the execution date of December 23, which coincides with Ye - seung's birthday . Before the date, Yong - go's fellow inmates work on a hot air balloon that Yong - go and Ye - seung board to watch their final sunset together . </P> <P> Years after Yong - go's execution, Ye - seung, who has been formally adopted by Min - hwan, has become a lawyer . She gathers her father's former inmates, all of whom have been released, to stand witness for Yong - go's ultimately successful retrial, ending in his acquittal . She visits Cell No. 7 and reminisces about their hot air balloon trip . </P> <Ul> <Li> Ryu Seung - ryong as Lee Yong - gu </Li> <Li> Kal So - won as Ye - sung (Child) </Li> <Li> Park Shin - hye as Ye - sung (Adult) </Li> <Li> Oh Dal - su as So Yang - ho </Li> <Li> Jung Jin - young as Jang Min - hwan </Li> <Li> Park Won - sang as Choi Chun - ho </Li> <Li> Kim Jung - tae as Kang Man - beom </Li> <Li> Jung Man - sik as Shin Bong - shik </Li> <Li> Kim Ki - cheon as Old man Da - do </Li> <Li> Syung Jang - hae as Aristotle </Li> </Ul>

Plot summary of miracle in cell no. 7