Sereph has a friend that works at a lab and he has been testing a new breast expansion medicine but has had a hard time getting it approved for human trials. He gives the first sample to Sereph but she is a little worried to try it alone so she asks her friend Farrah to come over and try it with her. They are told that the medicine did fine on lab rats but just to take a small sip because the reaction is extreme and will make their breast grow very quickly. They take the medicine and go do some work in their rooms but when they next meet they cannot believe the results. The girls are so excited and horny after their breasts grow and can't deny their intense feelings for wanting to grow more. The girls decide to push the limits of their bodies and keep sipping. Soon their breasts are so big that the girls decide to start their own sorority because their tits are that amazing. To keep their standards up they decide to go one more size bigger and then call it a night but Serephs urges for bigger tits took over and she pushed the limits until she fell out on the floor. Farrah finds her in the morning and cannot believe how huge her tits are!