The Forgetting Bird

Nobita is doing his homework at Shizuka's house, but forgets to bring his notebook home. On the way, he sees Gian practicing shooting with Suneo, but he doesn't hit any cans, which he finds very interesting. After returning home, Nobita's mother asks his father to send a letter and reminds him not to forget it. As a result, he forgets to bring the letter when he is about to leave, so he asks Doraemon for help. Doraemon lends the "Forgetting Bird" to his father. With the "Forgetting Bird", his father feels relieved. After his father goes out, Nobita sees his father passing by the mailbox and leaves with peace of mind (but his father still doesn't send the letter out). When his father takes the wallet to demonstrate at his friend's house, although he puts the wallet in his pocket after the demonstration, but the "Forgetting Bird" still calls afterwards. He forgets to bring the wallet for unknown reason. It turns out that she forgets to turn off the fire. Everyone is very happy. In the end, his father forgets to bring the "Forgetting Bird" home. Of course, he also forgets his wallet at his friend's house, so he forgets to send the letter. Later, on the way to Shizuka's house, Nobita goes to play shooting with Gian and Suneo. Gian remembers to help his father, and Suneo remembers to go back to have a big meal with his father and leaves. Nobita also returns home and happens to meet his father who forgets to bring the "Forgetting Bird" back. At this time, Nobita remembers that he forgets to go to Shizuka's house. Doraemon has to give Nobita another "Forgetting Bird". At Shizuka's house, when Shizuka picks up the "Forgetting Bird", she hears the "Forgetting Bird" chirping. Nobita thinks that Shizuka forgets to prepare cakes and drinks, but it is not until after eating the cakes and drinks that he realizes that it was to buy a gift for Shizuka's father. After that, Nobita returns home to finish his homework (although the handwriting is messy), and his father also takes the "Forgetting Bird" home. At this time, the "Forgetting Bird" in Nobita's hand suddenly chirps again. After Doraemon takes the "Forgetting Bird", the "Forgetting Bird" is still chirping, and after his mother takes his father's "Forgetting Bird", she also hears the "Forgetting Bird" chirping. The three of them suddenly realize that they have completely forgotten about Father's Day, so they rush out to buy gifts and food for their dad.