Firstly, it is your very first chapter. Ergo, at the very bottom and it'll be the first thing anyone sees when wanting to take a deeper look at the story.
Secondly, people are absolutely going to look at that first as if it's an extended synopsis. If they like what they see, then they'll heart it.
Thirdly, since it's the first thing people will see, it means it'll have the most views out of any page in your story (most of the time). Therefore, the likelihood of having more likes goes up. (unless that particular chapter is generally disliked).
Fourthly, from observations on here and on other sites, earlier chapters tend to have the highest number of likes compared to later chapters.
Fifthly, chapters of this nature stand out. It's 100% the first thing I'll be looking at before investing time into a story if one is provided.