Perazhagan movie revolves around Chinna (Surya)who is a village youth who is sympathized for his looks but is lauded for selfless service to others. He covers up his handicap with humor. Unmindful of his looks, Chinna goes around looking for a suitable bride with the help of his friend (Vivek). Brushing aside many an insult hurled at him, he carries on.
In contrast to him is Karthik (Surya) who is a rough college student, who loves his classmate Priya (Jyothika). She comes across Chinna, who assures her that he would get her married to the man of her heart but she gets killed in a fracas involving a gangster. Meanwhile, the hunchback Surya comes across an orphaned poor blind girl, Shenbagam (Jyothika). He wins over heart by helping her out.
Thanks to his efforts, she gains her vision (the eyes of deceased Priya are transplanted on her). This results in a tussle between Chinna and Karthik as to whom Shenbagam belongs to now. However, fearing his looks, the hunchback, Chinna, decides to leave way for the other. But fate has different things for him.