In Sunshine, Ke Ying (played by Cai Wenjing), a talented teacher at a foreign languages institute, is carjacked by criminals. Unexpectedly, she helps the police shoot a fugitive dead during the incident. Seven months later, the carjacker has changed his appearance and become Feng Xiaosheng (played by Peng Guanying), president of the Feng Group. He launches a brutal campaign of revenge against Ke Ying, who has yet to recover from her trauma. To protect herself and her family, Ke Ying matches wits with the criminal forces. Together with Xiao Wu (played by Liu Kai), a delivery driver who provides the police with leads, she secretly gathers evidence of the Feng Group's crimes and helps the police and investigation team prevent the group from moving its funds overseas. After overcoming countless obstacles, justice ultimately triumphs over evil.
