Foster's Home for Imaginary Friends (2004)

S6E13 Goodbye to Bloo

The gang organizes a special day to celebrate Mac, as they think he's about to leave for a new adventure. They come together to create unforgettable memories, ensuring that his last day with them is filled with joy and laughter. As the day unfolds, they reminisce about their shared moments and express how much he means to them, hoping to make his departure a little easier.