Charlotte Austin is the city's most elite architect-cold, precise, and obsessed with structural integrity. When her lifelong best friend, Engfa Waraha, gets engaged to a man Charlotte knows is a serial cheater and a financial fraud, Charlotte doesn't just sit back; she designs a demolition. Under the guise of a "fake relationship" to make Engfa's ex-fiancée jealous, Charlotte moves Engfa into her high-tech penthouse, intending only to protect her. But as the lines between the "blueprint" and reality begin to blur, Charlotte realizes that the most dangerous flaw in her design was her own heart. As Apo Nattawin dirty secrets are unearthed and the "fake" dates turn into a deep, soul-consuming passion, Engfa must decide if Charlotte is her savior or a master manipulator. In a world of glass towers and floral scents, they must discover if their foundation is strong enough to survive the truth, or if the Architect of Secrets has built a house that's destined to collapse.