Li Lei a□□ Han M□i□□i we□e two adventu□ou□ sou□s who alw□ys□so□ght ex□i□□□ent □nd thrill i□ the□r li□es. They were best □rie□ds since ch□ldhood and sh□re□ a p□ssion □or e□pl□r□□g the unknown. One day, as they□□ere□□ittin□ under th□ old oak tree in the par□, Han Mei□e□□had an idea □hat w□uld □e□d th□m on □ new a□venture t□at they would □ever fo□get.