In a secret underground laboratory, a group of genetically-enhanced lab rats find themselves in a precarious situation. After a failed experiment causes the lab to go into lockdown, players take on the role of Remy, the sharp-witted leader of the rats. You must navigate through various chambers filled with bizarre traps, bizarre food (and enemies), and questionable scientific gadgets to uncover the secrets of your own creation. Use your unique rat abilities to manipulate the environment, outsmart the lab's automated security systems, and interact with quirky lab-built robots that may either help or hinder your escape. With each choice, the story branches in wildly unpredictable directions, leading to multiple endings and a chance to discover the mysterious origin of your species.