Mars Hale, a dedicated inventor, delivers a completed gadget to a client, returning to his workshop to continue work on a significant personal project: a humanoid robot named RoHu. Mars activates RoHu, and the robot, displaying unexpected emotions and curiosity, quickly forms a bond with his creator. RoHu helps Mars with various tasks, learning about human emotions and developing a desire to experience life more fully.
A tense visit to a hospital leads to RoHu experiencing fear and anxiety for the first time, strengthening his attachment to Mars. The next morning, RoHu decides to confess his feelings for Mars but is interrupted by an unwanted guest, Dr. Ivy, who causes tension. Mars supports RoHu, reaffirming their bond.
Later, Mars and RoHu attend an important meeting where discussions on groundbreaking scientific and medical advancements captivate RoHu's interest. This marks the beginning of RoHu's deeper exploration into human knowledge and experiences, setting the stage for future developments in their relationship and RoHu's understanding of what it means to be human.