The fuction of を in this specific sentence


I was reading this short 小説 about a difficult love relationship bewteen a man
and a woman, and this sentences show up.

叶わない恋は存在するとは思います。 でも、二人が望んでいるなら、 超えられる事 **を** 多くあると信じています。

So, despite be able to understand the general meaning, i don't quite get the
fuction of を in the last sentence; for my understanding, it should be:

でも、二人が望んでいるなら 超えられる事 **が** 多くあると信じています。

With と as a quotation mark. を indicates a direct object of a verb, but here
what is the verb? ある is an intransitive verb, so it cannot takes direct
object; 信じている may be, but then what is the use of と if it's not a quotation
mark? Could you help me understand? Thank you very much!

P.S. I know that を can be use not only for direct object, but also to express
a movement through a place or something. Is this the case? Perhaps,
figuratively?

