Mark, Timmy and ''King'' their puppy are going picnic at the park. Today is Sunday, Mark and Timmy are free, they ask their parents to take King go out. It's sunny and windy out. They prepare many food: Sanwich, fruit, biscuit, candy, flower, ect. There are many red leaves in the park, they meet a girl riding a bike. They invite the little girl to play hide and seek and chase together. At lunch, the three of them and King eat the food that Mark and Timmy brought, they talk about their family, teachers and friends at school, while the three of them talking, King run around chasing butterflies, King discovery a mouse hole and bark, he digs with his paw to scare the mouse in the cave. In the afternoon, when they say goodbye, they promise to meet each other next week and go to the park.