Therese "Reese" Villarosa was a 4-time MVP graduate from one of the best collegiate varsity in the Philippines, and was considered as one of the living legends in Philippine volleyball. Volleyball is her passion ngunit sa kanilang championship game ng kaniyang last playing year sa college ay nagtamo siya ng isang major injury na naging dahilan para hindi na siya muli pang makapaglaro ng volleyball. Gayunman ay hindi pa rin niya iniwan ang pinakamamahal niyang sport. Naging isa siya sa pinakabatang head coach sa kasaysayan ng Philippine volleyball nang hawakan niya ang team na hindi pa nakakapagkamit ng kampeonato mula noong mapasali ito sa UAAP-ang Salvatore Women's Volleyball Team. However, leading her team to the collegiate volleyball championship is too far from easy. Liban sa training ng team, challenge din sa kaniya ang patinuin ang bagong students o rookie players ng Salvatore lalong-lalo na ang napakapasaway na Filipino-Italian key player na tinaguriang "The Genius Setter" sa mundo ng volleyball.

Graduate na ng psychology si Genesis at nagtratrabaho na para sa isang malaking kumpanya. Si Raegan naman nasa college pa rin, naglalaro ng tennis para sa unibersidad niya at kasabay nito ay namamahala pa siya ng airlines na iniwan sa kanya ng pamilya niya. Ano pang nagbago sakanila? Girlfriend Duties. Dahil wala na ang artistic genius na si Rae at naglaho na din na parang bula ang scientific genius na si Gan, sinagot na sa wakas ni Genesis si Raegan. Pero kung kailan inaakala nilang masaya na sila, saka naman dadami pa ang problema nila. Hindi pa tapos ang roller coaster ride ni Genesis. Dahil hangga't kasama nya ang split genius na si Raegan, life will be giving her one heck of a ride. This is the book 2 of Split Genius; House Zeus of the Familia Olympia Series.

Arabella Mendez -- She's ambitious and determined. Hindi siya naniniwala sa true love. She said, love is just for fools. Ayaw niya ng attachment. She's a happy go lucky young lady. She needs someone wealthy --- wealthy enough to save her and her family from bankruptcy. And there, she met Alex. Alexandra Montalban -- a pretty multi-millionaire young lady who doesn't know how to smile. Istrikto, tahimik at kung ano ang sinabi niya, ginagawa niya whether you like it or not. She has her own rules. You follow or you follow. Parang yes or yes lang. She's not the kind of girl you can go and mess around. But she's all Arabella needs. Kaya naman kailangan gumawa si Arabella ng paraan para mapalapit siya kay Alexandra. Her mission, to seduce Alexandra Montalban. Mananalo kaya siya sa larong siya mismo ang gumawa? O mahuhulog siya sa bitag ni Alexandra?

Simpleng Psychology student lang naman si Genesis eh. She took up that program kasi gusto nyang tulungan yung mama nya sa psychological clinic nila. But it's not only that, she's greatly interested in the program too! She's interested with how the brain works-- how it affects one's feelings and thinking. One day, someone walks in their clinic and as suggested by her mother, Genesis befriends the girl. Not expecting her life to go in an unexpected roller coaster ride after that. Read the story of Genesis and how she dealt with the split genius, Raegan.