What's the T+ for?

LGBT+

Everyone knows about Lesbians, Gays, and Bisexuals. But what about that T+ at the end there?

Olivia, a young girl who is struggling with her sexuality, is about to find out what that T+ means. That there are way more ways to love people than she thought there was. She will learn the non-importance of gender barriers, and that love has no rules or boundaries. That love is simply just love. And nothing can change it's definition.