All 20 year old "Yaya" Annette Chirawat wants is freedom- from her heart condition and her unfeeling father. Raised as a human weapon to take down her father's business rivals, Yaya only feels trapped in an endless vicious cycle of ruining people's lives. But when her father promises to let her go after giving her shares to his company only if she takes down the business moguls of Thailand, she agrees almost immediately. To do this, Yaya infiltrates Köcher high as "Gorya" Thitara Jundee and gather secrets from the F4 and their families to bring them down. Whilst hiding her identity as a business mogul's daughter, Yaya must guard her poor, failing heart from Thyme's witty charms - and learn to see beyond the surface.