Mammy Two-Shoes is being "attacked" by Jerry again, so she once more orders Tom to get rid of him. When he epically fails once again, Mammy decides that Tom is too old to work in the mouse-catching business anymore, and brings in a younger, faster, and more hyper cat named Lightning that disposes of Jerry in an instant. Proud of the new cat, Mammy tells him to take good care of Tom, and goes to bed. But when Lightning frames Tom for raiding the refrigerator, Tom gets kicked out of the house, as well. So both Tom and Jerry come up with a plan to get rid of Lightning once and for all.