In early 2013, Lemz offered to help Terre des Hommes Netherlands when they first learned about a new form of child exploitation that is spreading like an epidemic. Men from rich countries pay children in poor countries to perform sexual acts in front of webcams. Lemz conducted research for nearly a year and called this crime Webcam Child Sex Tourism (WCST).

WCST happens tens of thousands of times a day, but prior to this campaign, only 6 men had ever been convicted of the crime. Lemz developed a 3D model that looked and moved like a 10-year-old Filipino girl and called her “Sweetie.” With Sweetie, Lemz went on public chat rooms and interacted with over 20,000 predators. They gathered incriminating evidence and information about them. In two months, 1,000 predators from 71 countries were caught in the act and identified. Governments were urged to act after the world witnessed Lemz handing over our short movie (, research findings, and the 1,000 names to Interpol.