After knowing the No.1 nuclear reactor facing the risk of explosion, the Japanese rescue team still decide to enter into the nuke station to find some ways cooling down the reactor, hereby minimizing danger for local people.
All of them are very clear that being raditated shall impact their health and lifespan. The most severe satuation is that they can only live for at most three years in the future. However, first team, about 20 members, enter the station. Hours later, the second team and third team, together over 90 staff, continue the hard work to prevent further explosion.