Marcus has to take a make up exam at school on his little sister's birthday. So he asks Thomas to spend the day with Kristy in his place. Marcus and Kristy's mom, Sarah, thinks it is a good idea and Thomas agrees to do it. Being part of a family brings up sad memories for Thomas. Ever the perfectionist, he plans out the entire day with wall-to-wall activities for Kristy. But the plans all go awry when Kristy has her own ideas about what to do on her special day! As the day draws to an end, Thomas takes Kristy and Sarah to a local amusement park to watch the fireworks display. Suddenly, a Digimon named Citramon attacks the park! Thomas and Gaogamon quickly reduce the Digimon down to egg form before any real damage can occur. Thomas apologizes to Kristy for ruining her birthday. But he has it all wrong - Kristy had a great time! The celebration continues back at the house with Marcus and Agumon in attendance. Everyone enjoys Sarah's delicious dinner and Kristy's big birthday cake.
—Anonymous