... then you're set.

This movie started out promising, but then it just sort of... fell flat? My friend and I ended up guessing the entire series of events that were to proceed, and we kept waiting for the shocking plot twist that would change our minds and elevate our collective opinion of the film, but it never came... except for the ending, which certainly left us intrigued. Did it hint at the possibility that the son wasn't actually dead and that he'd been in cahoots with fake Juyeong the entire time? Or was it the real Juyeong all along, except he got plastic surgery?

This felt less like a thriller and more like a warning regarding our reliance on technology and how smartphones have compromised our security and privacy in a technological world.

If you're an Im Siwan stan, you'll probably make it to the end. Please watch with a friend, because that way you can congratulate each other whenever your guess for what's about to happen next proves right.

Good enough for a one-time watch.