Plump Dasha Guseva was mortally in love with her boyfriend Vasily Yudin, a famous scientist, and was very worried that his cunning competitors would take him away. And here is a new reason for worry: Vasya’s new invention is being hunted! Fortunately, not only does his head work, but his fists also work - the inventor neutralized the criminals on his own. True, the attackers managed to escape, but he managed to search their pockets and found his own photo with the touching inscription “Dasha from Vasya”? Of course, the girl was suspected of having connections with the attackers. To save her good name, she will now have to figure out who is making an attempt on her beloved Vasya and why she wants to frame her!