Tracy gives her friends, including Barney, souvenirs from a trip to the beach. When Barney tries to put his shell in his memory box, it explodes, spreading memorable objects all across the park. Through the day, Barney and the kids meet up with Riff, BJ and Baby Bop, while remembering great times with friends. From Halloween frights to car rides, the day is a memorable one. It even becomes more memorable when Mr. Boyd makes a return visit, as a photographer that Ryan and Emma know. Stella the Storyteller also returns to give Barney a book about most of his friends through the years. In the end, everything fits in the memory box and everything ends on a good note.