After living living her life until she was old and grey. Poison expert Lihua Lei died peacefully at an old age, surrounded by those she love. Expecting to rest in peace in the afterlife, Lihua Lei finds herself not in heaven, but instead her soul transmigrated into the body of a young 18 year old who died full of hatred and regret. The young girl's name is also Lihua Lei. She is the neglected legitimate daughter of the Prime Minister. Having been betrayed by her half sisters, Lihua finds herself poisoned, kidnapped and left for dead inside a cave for the animals to feast on her dead corpse. Lihua swore a death oath for revenge and found another soul replace her's as her soul starts to fade. "In exchange for giving me your body and letting me live a second life. This grandma promises to fulfill your last wish and take revenge on those who wronged you. To the littlest disagreement to the biggest betrayal, this grandma promises to pay them back tenfold so your soul can rest in peace." Grandma Lihua promised the young Lihua. "This grandma has already lived a life full of hardship and knows the sweet taste of peace, so this grandma isn't afraid to let them know what Lihua Lei's true colors are! This old grandma will show them not to mess with Lihua Lei!"

Cold ako sa mga taong hindi ko kaclose. Hindi naman ako ganito dati eh. Masayahin palangiti. Pero mga hayop sila. Kinuha nila sakin ang mga taong importante sakin. Kaya naging ganito ako. Nagpalakas. Hindi nagpapatalo at hindi sumusuko. Babalik ako. Babalikan ko silang lahat. At ipaparanas ko ang sakit na idinulot nila sa pamilya ko. Papatayin ko silang lahat. Walang makakapigil sakin. At sa oras na may humadlang sa mga plano ko, matitikman nila ang hagupit ko. "Hindi ko hahayaang saktan nila ulit ang mga mahal ko sa buhay. Dahil sa oras na mangyari yun lahat damay '' -Queen Black

Epilogue. Ending ng Girlfriend for Hire! Syempre kung hindi mo pa nababasa ang GFFH wag mo munang basahin :)