Unlock My Boss (2022)

S1E3 Episode 3

In-seong is puzzled by the messages and calls from an unknown number, while Seon-ju sees it as an opportunity to trace the caller. On the day when both internal and external foes of Silver Lining convene, In-seong uses security protocols to gather all the executives' phones. When he returns the call to the mysterious number, one of the phones unexpectedly starts ringing.