Overview: After two years grounded to the British Isles, Jamie, Micah and Romesh are back for an epic sporting odyssey across Southeast Asia. Along the way they'll be joined by an array of star guests: Mo Gilligan heads into the Vietnamese jungle; Alan Carr and Big Zuu take on a synchronised swimming challenge; Patrice Evra and Maisie Adam race in Ha Long Bay; while Joel Dommett and Emily Atack attempt May Thai.