Arrête, je suis ta belle-sœur !

After Emily Ashton unexpectedly loses her husband, she discovers he was the eldest heir of a wealthy billionaire family. She is taken in by her mother-in-law into the prestigious Pierce household. Emily soon becomes bickering frenemies with her brother-in-law. They start off hostile and grow to deeply understand and care for each other. Bound by their forbidden sister-in-law and brother-in-law status, they hold back their feelings. After surviving a devastating crisis together, they finally confront their true hearts and end up as lovers.