Lee Seha lands a coveted dual role as a researcher and zookeeper at a highly secure, specialized facility. Upon her arrival, she is assigned to oversee five select Breeding Males kept within the Free-range Breeding Facility. Her primary, clinical objective is simple yet highly intimate: to successfully harvest their reproductive cells for research.

However, managing five physically imposing, genetically unique men proves far more complicated than any textbook prepared her for. As Seha conducts her daily rounds, the boundary between professional duty and raw temptation begins to blur. The wild, untamed men quickly grow attached to their new handler, viewing her as far more than just Ms. Keeper. What began as a sterile, scientific operation rapidly devolves into a series of highly charged, dangerous, and erotic encounters that threaten to consume her entirely.

(Source: Lezhin US)