Every beautiful story has its beginning. In this case, the story started when Lui met Jerry. The owner brought a new little kitten home and this is a very risky decision as cats can react in different way to it. We see how the resident cat is nervous and does not look very happy about this decision. The kitten is perceived as intruder for the cat.
On the second day he watches and mostly reflects and then day 3 follows when Luigi makes first attempts to contact the kitty. On day 4 he watches how Jeremy plays and on the fifth day decides that it can be a good friend! This is the beginning of beautiful friendship.