Keith is a tiny Chihuahua with a big attitude-he rules his house and his Mama's heart. But his world is turned upside down when his Mama brings home Queenie, a fluffy kitten who steals all the attention. Determined to stay on top, Keith causes mischief, framing Queenie for his naughty deeds and making her life miserable. But when his antics backfire and he loses his cosy spot in bed, Keith learns that perhaps sharing might not be so bad after all ...