Main heroine of this story is Erisa Langley. She is a student about to graduate and when she learns that there is a complimentary cruise trips planned for best students she gets buried into studying even a lot more... which barely left her any time for her other passion - hot ladies! On the other sight there is barely any better place for such lesbian as Erisa to find a whole bunch of best pussies othar than during cruise!
"Callisto" is the name of your ship. Your spaceship to be a lot more certain. Once a military you are now giving your own orders and go to your own adventures. You happened to gather an amazing crew which includes not only the talented specialists but also hot looking chicks (alien chicks as well!) so your travels around the galaxy are exciting in more than one meaning of this word.