に着くとすぐに

as soon as someone arrives

→ に
phrase Rare #26,267
as soon as someone arrives Used to describe an action that happens immediately after arriving at a place. The subject is often understood from context.
JA: 駅に着くとすぐに、友達に電話しました。
EN: As soon as I arrived at the station, I called my friend.

彼は成田に着くとすぐに私に電話をくれた

He called me as soon as he arrived at Narita.

そこに着くとすぐに雨が降り始めた

As soon as we got there, it started to rain.

彼は松山に着くとすぐに叔父に電話をした

As soon as he arrived in Matsuyama, he called his uncle.

大阪に着くとすぐに彼はホテルに直行した

As soon as he arrived in Osaka, he headed straight to the hotel.

そこに着くとすぐに雨が降り出した

As soon as we got there, it started to rain.

彼は松山に着くとすぐにおじさんに電話した

As soon as he arrived in Matsuyama, he called his uncle.