[{_id:"1",transitions:[{_id:"11",checkLists:[{_id:"111",name:"One",},{_id:"112",name:"Two",}]}]}]

db.collection.aggregate([{$match:{"transitions.checkLists._id":"111"}},{$project:{transitions:{"$reduce":{"input":"$transitions",initialValue:[],in:{$concatArrays:["$$value","$$this.checkLists"]}}}}},{$project:{_id:0,checkLists:{$filter:{input:"$transitions",as:"item",cond:{$eq:["$$item._id","111"]}}}}}])