Arina is looking forward to the victory of her cooking video blog in the school competition. It's a small matter: she needs to make a video, but the sisters are not going to help her. Dasha's parents continue to boycott Broom, and Antonina Semyonovna threatens to evict Tatiana from her apartment. Lisa devotes all her free time to Plato, and this angers Diana. An enterprising twin makes a bet with a boy. In case of a loss, Plato will no longer appear in their house and school.

Sonya can't smell it: it looks like it's covid. Venik will have to stay in quarantine and reschedule his meeting with Tatiana Vladimirovna. Dad doesn't realize yet that the disease is part of his daughters' insidious plan to destroy his relationship with a psychologist. First love is not good for Lisa's academic performance: She doesn't do her homework anymore. Diana has no one to copy from, which means it's time to return her sister's passion for learning. The enterprising twin cannot do without Plato's help.