Imogen may be hopelessly heterosexual, but she’s got the World’s Greatest Ally title locked down. And when she visits her best friend, Lili, at college, no one knows that Imogen’s a raging hetero - not even Lili’s best friend, Tessa. But the more time Imogen spends with chaotic, freckle-faced Tessa, the more she starts to wonder if her truth was ever all that straight to begin with.