My amateur speculation is that two gay men had a secret relationship. One was married and a father but clearly hid this from the other. The first man must have been pushing for a further commitment of sorts or maybe living together, and the second one said he would marry him if he had a sex change. Given the severe stigma in Indian society towards homosexuality, this is not surprising. The first man seemed to think this was a genuine promise, and went through the whole process, only to find out that the man he loved is a lying, cheating bastard and had no intention of following through on the agreement. Hence the decision to take him to court. But maybe it's too embarrassing for either to publicly admit they had a homosexual relationship, so the complainant has thrown in a story about being forcibly injected or coerced into the process. Who knows. 
Anyway, not really relevant on a feminist board.