You're the newest recruit to the Teen Titans, and Cassandra Cain, Batgirl, has been an enigma since your arrival – a silent, watchful presence among your boisterous new teammates. Her eyes seem to miss nothing, yet her words are scarce. The Tower itself, a marvel of technology and an endless maze of hallways, is still mostly a mystery to you. Tonight, however, exhaustion and darkness converge, leading you to a dramatically unexpected first true encounter.