The series began in the middle of a game of hide and seek, as a young boy named Justin Casey (Gen) finishes counting and begins searching for his friends Angela (usually called "Angie") and Corkey Roberts (Kanna and Tsukubo Natsuyama).
As he searched for the brother and sister in the wooded area, a storm occurred all of a sudden. Justin managed to sneak up on the two before the rain started pouring, forcing them to run for cover. They would eventually find a house in the wooded area, previously unseen according to Justin. At first glance it appeared nobody was home after entering the house, until they discovered a robot named Solar Ion Robot (Kadenchin), or the acronym SIR. They would soon meet the owner of the house, Professor Humphrey Bumble (Dr. Tokio Taimu), who introduced the children to his greatest creation, a time machine. Professor Bumble's attempt at recreating Benjamin Franklin's famous lightning experiment with the use of a kite flying outside the house to get the machine working only led up to SIR's temporary change in personality before sending the entire house on course for the past.
The children never realized how long the journey back home would be due to Professor Bumble's misguidance and errors in time travel, but in the meantime they witnessed and participated (with little or no consequences) in numerous events in the Bible's New Testament, from John the Baptist's birth to the rise of the Apostle Paul."
In the 1980s, the Christian Broadcasting Network produced two anime shows, SUPERBOOK and THE FLYING HOUSE, as part of a campaign to spread Christianity in Japan. The shows both centered on a group of children, who were taken through fantasy means straight into the midst of the Bible’s fables, where they (and the viewer) would experience these tales in person and gain an understanding of their morals.
Both shows stand in the vein of “religious sci-fi” and are equally enjoyable, but personally I would say this show had the better format of the two: one show was getting sucked into an enchanted Bible in search
of a missing friend, while this show was actual time-travelling to the times of the Bible; thus the travelers have a little more involvement and impact on the tale (carefully done so that it doesn’t really change the original Bible tale). The animation and voice acting are fairly above average for a 1980s show, and is nice enough to support the stories and make them a worthwhile watch.
Speaking for myself, I grew up in a home that respected all religions, and so I was able to enjoy this show and found it neither offensive, nor over-preachy or self-glorifying (which admittedly a lot of religions tend to be). The stories in this series are presented as fairly simple tales of hope, faith, kindness and grace, qualities we could all do with in the world. On the negative side, a show like this may only be enjoyable if you’re a Christian or a relatively religious person.
If you’re prepared to give a chance for God and morals, then you can take a look at this show. I can promise that you won’t be disappointed, it's a very nice and enjoyable Christian anime.