The Neuchâtel sailor Yvan Bourgnon is making a crazy bet: to complete the first round of the world alone, on a sports catamaran without a cockpit, a boat the size of a beach sailboat. 220 days and 55’000km at sea, without the possibility of sheltering from the elements. Funambulner of the seas, alone with his camera, he faces a shipwreck, storms, pirates, the cold, the heat wave, but also tastes innumerable moments of happiness, fullness and success. An immersion in a long and difficult adventure that Yvan Bourgnon, like an artist, makes accessible, comfortable, almost poetic. An adventure that also highlights the worrying issue of pollution and the safeguarding of the oceans, which is why Yvan Bourgnon is actively involved today, with his project The Sea Cleaners.