This is the first time writing a review so i´m sorry if it´s kinda messy! I just finished the movie so my mind is kinda fresh. I will give a spoiler free review and i´ll give a warning as to when i´m talking in depth about the movie. I only wanted to write a review about the plot, especially the ending, soooo let's get it!


STORY
Spoiler free:
So when i was watching the trailer i thought it looked very scary for a thriller which i personally liked but also feared. However, the movie did start quite peacefull and than it suddenly got very scary without anything scary happening. I applaud the director for making the beginning of the plot very scary without doing Much. The camera angles, lighting and background music were very eery and i had chills all over my body. I did follow the plot until the end and Oh my, that got really messy..

SPOILER:
So for people who watched the end, did y'all get it? Because i didn't lol. My interpretation of the ending was that Young-sook from the 90's survived the fall, later on killed the mom and kidnapped Seo-Yeon. And when Seo-Yeon was blacked out after Young-Sook's torture she visited her father's grave and that's what we saw, but it wasn't what happened! So when we were watching the movie most of us thought about the Butterfly theory right? (FYI the butterfly effect is the sensitive dependence on initial conditions in which a small change in one state of a deterministic nonlinear system can result in large differences in a later state.) Yet somehow this movie didn't use this theory even though because of the small changes , the future changed. This becomes clear when watching the ending because we saw two different endings: One where Seo-yeon's mom survives after the fall and Young-Sook dies, and one where they both survive and where Young-Sook later on kills the mom and kidnaps Seo-Yoon. But these weren't the only timelines. Everytime Young-Sook changes anything, another timeline gets created and Seo-Yoon's consiousness travels to the other timeline. That theory of the movie is honestly so confusing and weird but its the only thing that could make the ending of the movie make sense. But than again, how did future Young-sook call her younger self to warn her she was gonna die? Like that doesn't make sense. She survived without the call otherwise present Young Sook couldn't survive so why did she call? That could've messed up the past and it could've resulted in her dying (which i think it did in that timeline). The only explanation of that part of the movie is that older Young-Sook was from another timeline, but how is she able to call herself from another timeline if Seo-Yoon could only call back to the past?

In conclusion:
The plot of the movie was very good but the ending was poorly executed which resulted in not really understanding what was going on. I was very dissapointed because my favorite Korean movie is Forgotten so i had quite high standards. When i read the plot and watched the trailer i got my hopes up as well, but they disregarded the Butterfly theory at the point where it doesn't make sense anymore. It's not a bad movie, it just has a dissapointing ending.
I only understood the ending because of this review, so read it if you really want to understand the ending:
https://www.thisisbarry.com/film/korean-movie-the-call-ending-explained-2020-netflix/
I also really want to applause the main actresses because both of them were spectacular and tbh i didn't expect such acting from Park Shin Hye! I would love to see her act in more movies/ dramas without romance. Her partner did outshine her tho and i was very surprised to learn that she is a rookie! I have seen her in Burning as well, and her acting is so natural.