Boruto dozes off on Thunder Train and wakes up in an unfamiliar location along with the other passengers. A mysterious individual known as Ouga forces them to participate in a game of death disguised as an experiment—who will successfully beat this game and make it out alive?!

As test subjects drop off one by one, Boruto tries to find a way to get everyone out alive. The next experiment is for the subjects to carry candles that are directly linked to their lives. Although some people try to save only themselves, Boruto and a fellow ninja from the Leaf Village, Kiseru Gankubi, aim to clear the challenge together with everyone…but Ouga’s experiment mercilessly pushes them to their limits!

While everyone is exhausted from Ouga’s experiments, a test subject talks about their goals, which leads everyone to talk about what they want to do if they survive. The mood is lightened, but Ouga begins a new experiment. Due to the careless actions of certain test subjects, everyone's lives are in danger once again.

Boruto reawakens to find he’s back where he first found himself.