It was the story of two person the one who is weak in studies and other was fat . They made a deal with each other . The fat one helped her in her studies and the weak one helped him to loose 20 kg but some sort of fight happened between them and they separated . He came to her after winter vacation in transform form but she was as it is . She became his Dobby (Dobby character of Harry Potter story when his master give him his any stuff then only he will be free) . Then she started work according to hi command . After sometime he freed her but they shared a great bond with eachother . They both take each other help to get their crush but slowly realised that they felt more than friend towards eachother. Due to some reason they separated from eachother . After four years they met and he apologized her and they again come together and story ended .