Park So Yi is waking up from a three-year coma in the upcoming mystery thriller 'The Second Child', which released its first stills this week.

The film follows Soo An (Park So Yi), who regains consciousness after three years in a coma. When she reunites with her mother Geum Ok (Lim Soo Jung), the dynamics have shifted. A mysterious girl named Jae In appears with an uncanny resemblance to Soo An. The first stills show a tension-filled reunion scene heavy with mystery and unease.

Lim Soo Jung has not headlined a mystery thriller like this in recent years. Pairing her with rising star Park So Yi creates the emotional depth the narrative requires. The chemistry in these first stills hints at a mother-daughter dynamic that is both loving and deeply unsettling.

The director and creative team are leaning into psychological thriller territory. Three years unconscious is a long stretch, and the film explores what that trauma does to a family. The appearance of Jae In introduces either supernatural or sinister elements that have fans speculating.

'The Second Child' appears positioned to generate sustained audience debate. Park So Yi's return to intense drama and Lim Soo Jung's presence carry the weight here.