Four young bus mechanics travel across Europe to Athens by bus on their summer holiday. En-route, they meet four girls (one who starts out as a boy), and eventually arrive at their destination with the boy/girl's mother in pursuit. They have many diversions, including romance, song and dance.

• Don - Joe Barnes
• Edwin - Thomas Hodge
• Steve - Dan Hardy
• Cyril - Lewis Slade
• Angie - Laura English
• Mimsie - Helena Rant
• Alma - Lois Coppins
• Barbara - Natasha Graul
• Stella - Emily Parker
• Jerry - Michael Gardner