<□>Li Lei a□□ Han Meimei we□e two □dventu□ous so□ls who always sought excitem□nt and□thrill □n t□e□r lives.□The□ □ere best friends since chil□h□□d a□d sh□r□d a p□ssion for explor□ng th□ unk□own. One day, as th□y were sitting under the □ld □ak tree □n□th□ park, Han Me□mei h□d an i□ea that would lead the□ on a ne□ ad□en□□r□ that □he□ wou□d never□f□□ge□.