The protagonist of the series "I Won't Be Able to Forget You" is a young girl named Polina, originally from a southern village on the seaside. At the age of 19, this beauty works as a nurse and helps her elderly farmer father. However, after her parent's death, she finds herself completely alone. The only person who unexpectedly comes to her aid is her secretive and suspicious neighbor Mikhail, whom everyone considers to be, at the very least, a fugitive criminal. It turns out that he is not a villain at all, but, on the contrary, a very caring and sincere person.