The American students confront some difficult truths in their debut week in a diverse south London school. Over in rural Arkansas, the host families battle culture shock. Homesickness kicks in for some of the UK students.

The UK students are shocked to learn that in Mena, Arkansas almost everyone has a gun. In the UK, the US students head to the world's number one ranked seat of learning. It's a far cry from their home state, where some books are banned.

Love is in the air for the two groups of teenagers as they explore their life in south London. Relationships bring both joy and tears as the US students have to leave their new friends to return home. In the US, the students struggle to find a date.