After being tipped off by an anonymous source, Detective Rosette "Ros" Dizon finds herself on duty helping to protect the prized treasure of a wealthy individual who is hosting a private train masquerade.
Through meeting guests, navigating investigative conversations, and weaving through the dance floor, Ros quickly wonders if the supposed thief is none other than the elusive Céline Deschamps. The only perp Ros could never catch and put behind bars. And the one and only woman who gets her heart racing.