Watch Online Free on Watchseries. Vessel is the story of the passengers of Flight 298, a red-eye on its way from Boston to San Francisco. Midway through the flight the passengers encounter an otherworldly force and are subsequently thrown into a fight for their lives. The story focuses on Danny (an everyday traveler), Emma (a flight attendant), Chloe (an unattended underage passenger) and Jim and Murray (the two pilots).