A woman wakes up beside her finance. She gets dressed and writes a note and leaves it in the kitchen and leaves for the weekend. Her finance wakes and sleepily finds the note. He is happy upon the first reading but as time goes by he begins to read into the words of the note. Words take on a new meaning. He sleeps badly and then the next day in a frenzy he packs up all her things. Finally she calls and his fears are put to rest. He is happy again. Masculine Certainty looks in a comedic way at the role jealously plays in a relationship.