Have you ever been the new kid at school? Rob-bot is, and not only that, he also is the first robot ever that goes to school! And as you may imagine, some of his classmates are clearly excited to have him as a new friend, but others... not that much. The first day is a little difficult for him as one boy has made it clear that whoever plays with Rob-bot will have to deal with him, but Rob-bot finds friends where you would least imagine it. And in the process of making friends, Rob-bot discovers the importance of plants and flowers and he wants to teach other children to take care of them. Will Rob-bot be able to make friends at this school and share his love for plants with them? Find out in The largest tree at school!