Recently, a troublemaking crow has appeared on Third Street. After suffering from its tricks, Tama and the others are joined by Bull, who has also had a hard time because of it, and they decide to stand against it to teach it a lesson. After a fierce scuffle, Bull takes off after it, but what he finds at the end of the chase is...

Bull is the berserker of Third Street! But lately, it's been noticed that he isn't really a bully deep down. Tama and the others aren't afraid of him anymore. As Bull frets over things not going his way, he comes across a sneak thief's mask. Bull puts it on and appears before the others, declaring himself "Masked Bull." What will Tama and the others do?
Why, you ask? Because sometimes a 
big, strong-looking dog like Bull
لماذا؟ لأنه أحيانا، كلب كبير وقويّ مثل بول
Wie sonst erklärt man sich,
dass ein starker Hund wie Bull
Porque una gatita linda como Koma
tout simplement
parce qu’un gros chien comme Buru
Perché, chiedete? Perché a volte
un cane forte e grande come Buru
Pergunta a razão? É porque algumas vezes um cão
grande e que parece ser bem forte como o Bull
Почему, спросите? Потому что иногда
такой большой, сильный пёс, как Булл,