The team placed fourth in the short program and third in the free skate to win the bronze medal overall behind Russian teammates Polina Kostiukovich / Dmitrii Ialin and Anastasia Poluianova / Dmitry Sopot.

Despite their podium finish, Pepeleva/Pleshkov did not receive a second JGP assignment but instead went on to win gold in the junior division of the 2018 Minsk-Arena Ice Star, and silver at the 2018 Russian-Chinese Winter Games.

At their second assignment, 2019 JGP Poland, Pepeleva/Pleshkov were again plagued by several technical difficulties and fluke mistakes which caused them to finish off the podium in fourth place.

At the 2020 Russian Championships, Pepeleva/Pleshkov gave two of their strongest performances of the season, placing sixth in the short program and fifth in the free skate to finish fifth overall, just ahead of junior-level rivals Panfilova/Rylov.

They placed third in both the short program and the free skate to finish third overall behind teammates Daria Pavliuchenko / Denis Khodykin and Iuliia Artemeva / Mikhail Nazarychev.