The time has come for Mandie and Celia to graduate from the Misses Heathwood's School for Girls. For a graduation gift, Grandmother Taft is taking Mandie and all of her friends on an ocean liner trip to Europe! As Mandie reminisces about all her exciting escapades, she looks ahead to her future--what new adventures await her? But first she must find out what happened to her graduation dress! Mandie book 40.