The boys’ team of rugby player Franc, American footballer Reef and gymnast Sol are in Japan to learn about the national sport of sumo wrestling. Watched over and cheered on by presenter Karim Zeroual, at the end of the week they are going to compete in a sumo wrestling tournament against top young locals. Led by presenter Karim, their first action-packed day involves a terrifying demonstration of sumo by some impressive – and pretty massive - local competitors. They then meet head coach for the week, Sensei Inahara, and their training partners - some of the top students from his school of sumo. After a quick stop to drop their bags at their accommodation (a sleepover with their training partners) they are straight into their first training session – learning how to stomp and stretch like a pro. Meanwhile, Karim tries to get into the sumo vibe by eating chanko nabe soup, their favourite food – all 10,000 calories of it in one go!